60-NIGHT GUARANTEE · FINISH THE BOX AND STILL GET YOUR MONEY BACK

60-NIGHT GUARANTEE · FINISH THE BOX AND STILL GET YOUR MONEY BACK

SLEPT SEVEN HOURS. STILL FOGGY AT NINE.
The hours were fine. You were in bed by eleven, you didn't wake up properly, the tracker gave you a decent number. And the first ninety minutes of the day are still a write-off you paper over with coffee. That gap has a cause, and it isn't how long you slept.
Aimed at the eight-hour window every other fix ignores
Replaces the fluid and minerals the night removes — the part no sleep product covers
Forty seconds a night. No melatonin, so nothing to shake off at seven
Seven sleep ingredients at full dose. Every milligram printed on the pack
4.9 from 2,400+ verified reviews

SLEPT SEVEN HOURS. STILL FOGGY AT NINE.
The hours were fine. You were in bed by eleven, you didn't wake up properly, the tracker gave you a decent number. And the first ninety minutes of the day are still a write-off you paper over with coffee. That gap has a cause, and it isn't how long you slept.
Aimed at the eight-hour window every other fix ignores
Replaces the fluid and minerals the night removes — the part no sleep product covers
Forty seconds a night. No melatonin, so nothing to shake off at seven
Seven sleep ingredients at full dose. Every milligram printed on the pack
4.9 from 2,400+ verified reviews

Tired is when you want to go back to bed. This isn't that.
This is waking up with a mouth like carpet and a head that feels a size too small. Standing in the kitchen at 7:15 doing something you've done four thousand times, slowly. Reading the first email twice and taking in neither pass. Not sleepy — dull. Present in the room and running about forty percent.
You wouldn't trust yourself with anything hard before ten. You've quietly organised your calendar around that, which is a thing you'd never say out loud in a review. And by the second coffee it lifts enough that you stop thinking about it — until 7:15 tomorrow.
What makes it maddening is that you did everything right. Bed by eleven. Phone downstairs. Room cold. The tracker gave you seven hours and eleven minutes and a green ring, and you still stood in the kitchen at quarter past seven like someone had unplugged you.
So the conclusion you've quietly arrived at is that this is just what your late thirties feel like. That the sharp version of you was a function of being younger and it isn't coming back.
IT ISN'T AGE
You did not wake up tired. You woke up in deficit — and the deficit was built during the eight hours you were unconscious and couldn't do anything about it.

Tired is when you want to go back to bed. This isn't that.
This is waking up with a mouth like carpet and a head that feels a size too small. Standing in the kitchen at 7:15 doing something you've done four thousand times, slowly. Reading the first email twice and taking in neither pass. Not sleepy — dull. Present in the room and running about forty percent.
You wouldn't trust yourself with anything hard before ten. You've quietly organised your calendar around that, which is a thing you'd never say out loud in a review. And by the second coffee it lifts enough that you stop thinking about it — until 7:15 tomorrow.
What makes it maddening is that you did everything right. Bed by eleven. Phone downstairs. Room cold. The tracker gave you seven hours and eleven minutes and a green ring, and you still stood in the kitchen at quarter past seven like someone had unplugged you.
So the conclusion you've quietly arrived at is that this is just what your late thirties feel like. That the sharp version of you was a function of being younger and it isn't coming back.
IT ISN'T AGE
You did not wake up tired. You woke up in deficit — and the deficit was built during the eight hours you were unconscious and couldn't do anything about it.

THE MECHANISM
Here is a thing almost nobody thinks about, because it's impossible to notice while it's happening.
You lose fluid continuously all night, and you take none in.
Every breath you exhale carries water vapour out of your body. That runs unbroken for seven, eight, nine hours — hundreds of millilitres from breathing alone. On top of it you lose water through your skin all night, whether or not you sweat and whether or not the room is cool. It's called insensible loss precisely because you can't feel it.
Add it up and an average adult can be down somewhere between 470 and 950 millilitres by morning. The best part of a litre. Gone.
And it isn't only water. Sodium, potassium and magnesium go out with it — the minerals your nervous system runs on, the ones responsible for nerve signalling, for muscle function, for the basic electrical housekeeping that makes you feel switched on rather than switched half-on.
NOW THE BIT THAT DOES THE DAMAGE
Across that entire eight-hour window, your intake is zero. Not low. Zero. You are the only system you own that runs a third of every day in continuous loss with nothing coming in.
You'd never do that awake. If someone told you to go eight hours at your desk without a drink you'd think they were mad. You do it every single night, and then you're surprised that 7:15 feels the way it does.
Fluid an average adult can lose across one night
Of continuous loss with zero intake
Products on the sleep shelf that replace any of it
Unloaded night
Pre-loaded night
Illustrative. Shows the shape of overnight loss, not measured values, and not a depiction of any individual.
Dry mouth and a heavy head before you've done anything to deserve either
The first ninety minutes on autopilot — present, functional, and running well under what you're capable of
Sleep that runs shallower than it should, because a depleted nervous system doesn't settle properly. Seven shallow hours only look like seven hours on your phone
Surfacing at three or four without registering it, which never shows up as a wake-up but shows up in the morning
Coffee doing structural work it was never meant to do — and then doing it again at two in the afternoon
THE MECHANISM
Here is a thing almost nobody thinks about, because it's impossible to notice while it's happening.
You lose fluid continuously all night, and you take none in.
Every breath you exhale carries water vapour out of your body. That runs unbroken for seven, eight, nine hours — hundreds of millilitres from breathing alone. On top of it you lose water through your skin all night, whether or not you sweat and whether or not the room is cool. It's called insensible loss precisely because you can't feel it.
Add it up and an average adult can be down somewhere between 470 and 950 millilitres by morning. The best part of a litre. Gone.
And it isn't only water. Sodium, potassium and magnesium go out with it — the minerals your nervous system runs on, the ones responsible for nerve signalling, for muscle function, for the basic electrical housekeeping that makes you feel switched on rather than switched half-on.
NOW THE BIT THAT DOES THE DAMAGE
Across that entire eight-hour window, your intake is zero. Not low. Zero. You are the only system you own that runs a third of every day in continuous loss with nothing coming in.
You'd never do that awake. If someone told you to go eight hours at your desk without a drink you'd think they were mad. You do it every single night, and then you're surprised that 7:15 feels the way it does.
Fluid an average adult can lose across one night
Of continuous loss with zero intake
Products on the sleep shelf that replace any of it
Unloaded night
Pre-loaded night
Illustrative. Shows the shape of overnight loss, not measured values, and not a depiction of any individual.
Dry mouth and a heavy head before you've done anything to deserve either
The first ninety minutes on autopilot — present, functional, and running well under what you're capable of
Sleep that runs shallower than it should, because a depleted nervous system doesn't settle properly. Seven shallow hours only look like seven hours on your phone
Surfacing at three or four without registering it, which never shows up as a wake-up but shows up in the morning
Coffee doing structural work it was never meant to do — and then doing it again at two in the afternoon
Look honestly at everything you've tried for this, because it's a longer list than you'd admit to.
You went to bed earlier. You cut screens. You dropped the room temperature. You bought the tracker and looked at the graphs. You drink two litres during the day, religiously, and you have the bottle on your desk to prove it. You have a large glass of water first thing. Someone told you about lemon and you did that for a while too.
Some of it helped a bit. None of it moved the fog.
Here's why, and it's the same reason every time:
THE SHARED FLAW
Every one of those fixes lands either during the day, when you're conscious and can top up whenever you like, or after you wake up, when the eight hours of loss have already happened.
Nothing you've tried does anything about the actual window. The window is the problem. It has always been the problem.
Two litres during the day is genuinely good practice, and it is also the easiest part of the day to get right — you're awake, you're near a tap, and your body tells you when it's short. Then at eleven o'clock you go into eight hours of continuous loss with no intake and no thirst signal, and that's the part you've never covered.
The glass of water when you wake up is turning up to the fire with a bucket after the house has finished burning. It rehydrates you eventually. It does nothing for the seven hours of shallow sleep that already happened, and nothing for the state you're in at 7:15.
Sleep hygiene improves the conditions for sleep. It doesn't put anything back. You can have a perfect bedroom and still wake up down 900ml.
The tracker is a thermometer. It tells you the night was poor. It has never once told you why, and it certainly hasn't fixed it.
And the melatonin, the magnesium tablet, the sleep tea — every one of those is trying to get you unconscious faster. But you don't have trouble falling asleep. You have trouble arriving in the morning as yourself.
You didn't fail at any of this. You were aiming at the wrong eight hours.
Look honestly at everything you've tried for this, because it's a longer list than you'd admit to.
You went to bed earlier. You cut screens. You dropped the room temperature. You bought the tracker and looked at the graphs. You drink two litres during the day, religiously, and you have the bottle on your desk to prove it. You have a large glass of water first thing. Someone told you about lemon and you did that for a while too.
Some of it helped a bit. None of it moved the fog.
Here's why, and it's the same reason every time:
THE SHARED FLAW
Every one of those fixes lands either during the day, when you're conscious and can top up whenever you like, or after you wake up, when the eight hours of loss have already happened.
Nothing you've tried does anything about the actual window. The window is the problem. It has always been the problem.
Two litres during the day is genuinely good practice, and it is also the easiest part of the day to get right — you're awake, you're near a tap, and your body tells you when it's short. Then at eleven o'clock you go into eight hours of continuous loss with no intake and no thirst signal, and that's the part you've never covered.
The glass of water when you wake up is turning up to the fire with a bucket after the house has finished burning. It rehydrates you eventually. It does nothing for the seven hours of shallow sleep that already happened, and nothing for the state you're in at 7:15.
Sleep hygiene improves the conditions for sleep. It doesn't put anything back. You can have a perfect bedroom and still wake up down 900ml.
The tracker is a thermometer. It tells you the night was poor. It has never once told you why, and it certainly hasn't fixed it.
And the melatonin, the magnesium tablet, the sleep tea — every one of those is trying to get you unconscious faster. But you don't have trouble falling asleep. You have trouble arriving in the morning as yourself.
You didn't fail at any of this. You were aiming at the wrong eight hours.
WHY THIS GETS WORSE RATHER THAN STAYING THE SAME
The fog doesn't sit still. It funds itself, and here's the mechanism:
You wake up at seventy percent, so you have a coffee. It works. By eleven you've had a second because the first has worn off and there's a thing you actually need to concentrate on. By two you're flat again, so here's a third — and that one is close enough to the evening to still be in your system at bedtime.
Which makes tonight's sleep shallower than last night's. So tomorrow starts a little lower. So you need the third one slightly earlier. And then a fourth.
Nobody decides to become a four-coffee person. It happens over about eighteen months, one reasonable decision at a time, and you only notice when you try to stop.
The caffeine curve creeps later, so it degrades the sleep it's compensating for
The first productive hour drifts from nine to ten to whenever the second coffee lands
Training gets moved to the evening because mornings are unusable, which pushes bedtime later again
You stop calling it a problem and start calling it your personality — and that's the point at which people stop looking for a fix
That last one is the real cost. Not the fog. The moment you file it under age and stop investigating.
WHY THIS GETS WORSE RATHER THAN STAYING THE SAME
The fog doesn't sit still. It funds itself, and here's the mechanism:
You wake up at seventy percent, so you have a coffee. It works. By eleven you've had a second because the first has worn off and there's a thing you actually need to concentrate on. By two you're flat again, so here's a third — and that one is close enough to the evening to still be in your system at bedtime.
Which makes tonight's sleep shallower than last night's. So tomorrow starts a little lower. So you need the third one slightly earlier. And then a fourth.
Nobody decides to become a four-coffee person. It happens over about eighteen months, one reasonable decision at a time, and you only notice when you try to stop.
The caffeine curve creeps later, so it degrades the sleep it's compensating for
The first productive hour drifts from nine to ten to whenever the second coffee lands
Training gets moved to the evening because mornings are unusable, which pushes bedtime later again
You stop calling it a problem and start calling it your personality — and that's the point at which people stop looking for a fix
That last one is the real cost. Not the fog. The moment you file it under age and stop investigating.
THE VARIABLE NOBODY SELLS
You cannot drink while you're asleep. That single fact eliminates every option except one.
If loss runs continuously from eleven at night to seven in the morning, and intake is impossible for that entire stretch, then the only place an intervention can go is the sixty minutes before the window opens. Endurance athletes have understood this for decades — you don't hydrate during the event, you pre-load before it, because there's a limit to what you can take on mid-race.
A night is the same problem. Eight hours of loss you can't interrupt.
So why hasn't a big glass of water before bed already solved this for you?
Because plain water doesn't stay. Without the minerals that hold it in circulation, most of it is heading for your bladder inside the hour — which is why drinking properly before bed tends to wake you up rather than sort you out, and why most people give up on it and go the other way. The water leaves before the window even opens.
Load the same fluid with sodium, potassium and magnesium in the right ratio at the right dose, and it behaves completely differently. It's retained across the window instead of flushed before it.
That's Pre-Loading. It is not a sleep aid and it isn't trying to be. It's the one thing you can do about eight hours you're going to spend unconscious.
mg sodium, potassium and magnesium — dosed for overnight retention, not daytime replacement
Sleep ingredients at full dose, every milligram printed
Minutes before bed — the only window that exists
THE VARIABLE NOBODY SELLS
You cannot drink while you're asleep. That single fact eliminates every option except one.
If loss runs continuously from eleven at night to seven in the morning, and intake is impossible for that entire stretch, then the only place an intervention can go is the sixty minutes before the window opens. Endurance athletes have understood this for decades — you don't hydrate during the event, you pre-load before it, because there's a limit to what you can take on mid-race.
A night is the same problem. Eight hours of loss you can't interrupt.
So why hasn't a big glass of water before bed already solved this for you?
Because plain water doesn't stay. Without the minerals that hold it in circulation, most of it is heading for your bladder inside the hour — which is why drinking properly before bed tends to wake you up rather than sort you out, and why most people give up on it and go the other way. The water leaves before the window even opens.
Load the same fluid with sodium, potassium and magnesium in the right ratio at the right dose, and it behaves completely differently. It's retained across the window instead of flushed before it.
That's Pre-Loading. It is not a sleep aid and it isn't trying to be. It's the one thing you can do about eight hours you're going to spend unconscious.
mg sodium, potassium and magnesium — dosed for overnight retention, not daytime replacement
Sleep ingredients at full dose, every milligram printed
Minutes before bed — the only window that exists


BUILT ON IT
One sachet in 350ml of water, an hour before bed. It is deliberately the least interesting thing in your evening — and it is the only product on the shelf built for the eight hours after it, rather than the ten minutes before.

BUILT ON IT
One sachet in 350ml of water, an hour before bed. It is deliberately the least interesting thing in your evening — and it is the only product on the shelf built for the eight hours after it, rather than the ten minutes before.

PILLAR 01
100mg sodium, 100mg potassium and 50mg marine magnesium. A fraction of a training dose, deliberately — this is not a workout sachet and dosing it like one would have you up at two in the morning.
It's the smallest quantity that holds fluid across the window rather than passing straight before it. This is the part that makes drinking before bed work instead of backfiring, and it's the reason anyone who gave up on the bedtime glass of water should try this once.
PILLAR 02
1000mg of L-glycine — a full gram, not a gesture. Glycine helps lower core body temperature, which is one of the body's own pre-sleep cues rather than a sedative effect.
This matters for fog specifically, because depth is the other half of the problem. Seven shallow hours and seven proper ones produce very different mornings and identical numbers on your phone. Deeper sleep is the difference between hours spent and hours that counted.
PILLAR 03
1000mg L-tryptophan, 200mg L-theanine, which increases alpha brain wave activity — the relaxed-but-alert state, not sedation. 100mg ashwagandha. 75mg valerian root at a concentrated 10:1 extract. 14mg vitamin B6. 2mg zinc bisglycinate.
No proprietary blend, no "contains a botanical complex" with the amounts hidden behind it. Every milligram is on the pack — including the three you've probably already got in a drawer, at doses you'll find are higher here than what you were taking.
THE HONEST BIT
There is no new molecule here. Magnesium, theanine and ashwagandha are already sold on every high street in Britain. What isn't sold anywhere is all seven at full dose sitting on top of an overnight retention base, taken as one thing at the same time every night. The combination is the product, and pretending otherwise to someone who reads labels would be the quickest way to lose you.
PILLAR 01
100mg sodium, 100mg potassium and 50mg marine magnesium. A fraction of a training dose, deliberately — this is not a workout sachet and dosing it like one would have you up at two in the morning.
It's the smallest quantity that holds fluid across the window rather than passing straight before it. This is the part that makes drinking before bed work instead of backfiring, and it's the reason anyone who gave up on the bedtime glass of water should try this once.
PILLAR 02
1000mg of L-glycine — a full gram, not a gesture. Glycine helps lower core body temperature, which is one of the body's own pre-sleep cues rather than a sedative effect.
This matters for fog specifically, because depth is the other half of the problem. Seven shallow hours and seven proper ones produce very different mornings and identical numbers on your phone. Deeper sleep is the difference between hours spent and hours that counted.
PILLAR 03
1000mg L-tryptophan, 200mg L-theanine, which increases alpha brain wave activity — the relaxed-but-alert state, not sedation. 100mg ashwagandha. 75mg valerian root at a concentrated 10:1 extract. 14mg vitamin B6. 2mg zinc bisglycinate.
No proprietary blend, no "contains a botanical complex" with the amounts hidden behind it. Every milligram is on the pack — including the three you've probably already got in a drawer, at doses you'll find are higher here than what you were taking.
THE HONEST BIT
There is no new molecule here. Magnesium, theanine and ashwagandha are already sold on every high street in Britain. What isn't sold anywhere is all seven at full dose sitting on top of an overnight retention base, taken as one thing at the same time every night. The combination is the product, and pretending otherwise to someone who reads labels would be the quickest way to lose you.
You've abandoned a routine before — everyone reading this has. So here's exactly what it costs, in seconds, before you commit to anything.
Tear it into 350ml of water
A normal glass, not a pint. Cherry. It tastes like a drink rather than a supplement, which is the only reason anyone sticks with one of these past week two.
Drink it an hour before bed
An hour, not five minutes. The point is to be loaded before the window opens, not to be drinking as it does.
Change nothing else
Don't stack it with three other new habits. Change six variables and you'll never know which one moved.
Judge it on mornings, not on nights
Not how you feel going to bed. How you feel at 7:15 — which is where this entire page is and where you'll notice it first.
WHAT TO EXPECT, IN ORDER
The dry mouth usually goes first, within the first few nights, and it is the earliest sign the pre-load is holding. Then the first hour of the day starts arriving with you in it. Then sleep depth over the following couple of weeks, which is slower because it compounds.
Two weeks to know. Four weeks to know it's real — and week four is the one that counts, because you've had things work for a fortnight before.
What we won't tell you: that you'll stop drinking coffee. You probably won't and we'd rather you didn't take our word for it. What a lot of people find is that the second and third one stop being load-bearing.
You've abandoned a routine before — everyone reading this has. So here's exactly what it costs, in seconds, before you commit to anything.
Tear it into 350ml of water
A normal glass, not a pint. Cherry. It tastes like a drink rather than a supplement, which is the only reason anyone sticks with one of these past week two.
Drink it an hour before bed
An hour, not five minutes. The point is to be loaded before the window opens, not to be drinking as it does.
Change nothing else
Don't stack it with three other new habits. Change six variables and you'll never know which one moved.
Judge it on mornings, not on nights
Not how you feel going to bed. How you feel at 7:15 — which is where this entire page is and where you'll notice it first.
WHAT TO EXPECT, IN ORDER
The dry mouth usually goes first, within the first few nights, and it is the earliest sign the pre-load is holding. Then the first hour of the day starts arriving with you in it. Then sleep depth over the following couple of weeks, which is slower because it compounds.
Two weeks to know. Four weeks to know it's real — and week four is the one that counts, because you've had things work for a fortnight before.
What we won't tell you: that you'll stop drinking coffee. You probably won't and we'd rather you didn't take our word for it. What a lot of people find is that the second and third one stop being load-bearing.
4.9 from 2,400+ verified reviews
Pre-Load base: 100mg sodium, 100mg potassium, 50mg marine magnesium, dosed to be held overnight rather than flushed
Seven sleep ingredients at full dose: 1000mg tryptophan, 1000mg glycine, 200mg theanine, ashwagandha, valerian 10:1, B6, zinc
Every milligram printed: no proprietary blends, nothing hidden behind a complex
No melatonin, no caffeine, no sugar: and nothing to shake off in the morning
Informed Sport certified, third-party tested every batch, no artificial colours, flavours or preservatives
60-night guarantee. Use all thirty sachets and still get your money back
4.9 from 2,400+ verified reviews
Pre-Load base: 100mg sodium, 100mg potassium, 50mg marine magnesium, dosed to be held overnight rather than flushed
Seven sleep ingredients at full dose: 1000mg tryptophan, 1000mg glycine, 200mg theanine, ashwagandha, valerian 10:1, B6, zinc
Every milligram printed: no proprietary blends, nothing hidden behind a complex
No melatonin, no caffeine, no sugar: and nothing to shake off in the morning
Informed Sport certified, third-party tested every batch, no artificial colours, flavours or preservatives
60-night guarantee. Use all thirty sachets and still get your money back









One nightly sachet for deeper, higher-quality sleep and overnight hydration, so you wake up recovered, not groggy.
Cherry
7 Natural Sleep Ingredients
BUNDLE & SAVE
1 Pack
30 servings · Save 30%
£34.99
£24.49
MOST POPULAR
2 Packs
60 servings · Save 40.5%
£69.98
£41.63
£20.82 per pack
+ Free Electric Mixer
£15
BEST VALUE
3 Packs
90 servings · Save 47.5%
£104.97
£55.10
£18.37 per pack
+ Free Electric Mixer
£15
Save 30% forever with automatic refills
No commitment. Cancel anytime.
Deliver Every Month
£80 of Free Gifts Included

Month 1
Cap + 6 Pack

Month 2
Bottle

Month 3
Towel
Ready to ship
60-day money-back guarantee









One nightly sachet for deeper, higher-quality sleep and overnight hydration, so you wake up recovered, not groggy.
Cherry
7 Natural Sleep Ingredients
BUNDLE & SAVE
1 Pack
30 servings · Save 30%
£34.99
£24.49
MOST POPULAR
2 Packs
60 servings · Save 40.5%
£69.98
£41.63
£20.82 per pack
+ Free Electric Mixer
£15
BEST VALUE
3 Packs
90 servings · Save 47.5%
£104.97
£55.10
£18.37 per pack
+ Free Electric Mixer
£15
Save 30% forever with automatic refills
No commitment. Cancel anytime.
Deliver Every Month
£80 of Free Gifts Included

Month 1
Cap + 6 Pack

Month 2
Bottle

Month 3
Towel
Ready to ship
60-day money-back guarantee
YOU DON'T HAVE TO DECIDE TONIGHT
Two weeks to know whether anything is happening. Four to know it isn't another fortnight wonder. We set the window at sixty days precisely so there's no version of a fair trial that runs out of time — a thirty-day guarantee quietly punishes anyone who actually tests something properly.
Use all thirty sachets. If 7:15 still feels the way it feels now, email us and we'll refund it. No return shipping, no form, nobody asking you to justify it.
We can write that because of what happens at week four. The people who get that far don't ask for refunds — and the ones who do have told us something worth knowing.
YOU DON'T HAVE TO DECIDE TONIGHT
Two weeks to know whether anything is happening. Four to know it isn't another fortnight wonder. We set the window at sixty days precisely so there's no version of a fair trial that runs out of time — a thirty-day guarantee quietly punishes anyone who actually tests something properly.
Use all thirty sachets. If 7:15 still feels the way it feels now, email us and we'll refund it. No return shipping, no form, nobody asking you to justify it.
We can write that because of what happens at week four. The people who get that far don't ask for refunds — and the ones who do have told us something worth knowing.
One sachet, an hour before bed, for a month.
Free cap and Fuel Guide · Cancel any time · 60-night money-back guarantee
One sachet, an hour before bed, for a month.
Free cap and Fuel Guide · Cancel any time · 60-night money-back guarantee
Food supplement. Not a substitute for a varied, balanced diet or a healthy lifestyle. Not intended to diagnose, treat, cure or prevent any disease. Individual results vary.
Overnight fluid and electrolyte loss figures describe a healthy adult average and vary considerably with room temperature, bedding, body size and individual physiology. If persistent morning fatigue continues despite adequate sleep, speak to your GP — it can indicate sleep apnoea, thyroid or iron issues that are worth ruling out properly, and no supplement substitutes for that.
Food supplement. Not a substitute for a varied, balanced diet or a healthy lifestyle. Not intended to diagnose, treat, cure or prevent any disease. Individual results vary.
Overnight fluid and electrolyte loss figures describe a healthy adult average and vary considerably with room temperature, bedding, body size and individual physiology. If persistent morning fatigue continues despite adequate sleep, speak to your GP — it can indicate sleep apnoea, thyroid or iron issues that are worth ruling out properly, and no supplement substitutes for that.