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Episode
3g Makes You Sleep 8 Hours Straight WITHOUT Getting Up to Pee
~38 min
Episode Brief·YouTube

3g Makes You Sleep 8 Hours Straight WITHOUT Getting Up to Pee

Thomas DeLauer
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TL;DR

The four things you'd lose by not watching

4 items

TL;DR

The four things you'd lose by not watching

4 items
1

3 grams of glycine taken 1 hour before bed reduces nighttime urination (nocturia) by suppressing the micturition reflex via NMDA receptors in the brain and spinal cord.

2

Splitting magnesium dose (250mg with dinner, 250mg before bed) prevents the diuretic effect of a single large dose while still aiding sleep.

3

Frontloading fluids in the morning with electrolytes and limiting intake after 5pm trains the bladder to hold longer overnight.

4

The Subco app (sub.co/thomas) provides third-party supplement testing, trust scores, and a pro version for optimizing your entire stack.

Protocols

Concrete recipes — what, when, how much, and why

5 items

Glycine for nocturia

WhatTake 3 grams of glycine 1 hour before bed.
When1 hour before bedtime.
Dose3 grams
For whomPeople who wake up to urinate at night (nocturia), especially light sleepers.
WhySuppresses the micturition reflex, reduces urgency and nocturnal voids, and improves sleep quality.
CaveatsTake in capsule form to avoid extra fluid intake before bed. May cause mild dissociation due to NMDA receptor effects.

The protocol is based on a 4-week human study where 3g glycine significantly reduced total urination, urgency, and nocturnal voids compared to placebo. Even when subjects did wake, the time to first void was extended. Thomas personally experienced a shift from waking at 1:30am to 4-5am, effectively sleeping through the night. He recommends combining glycine with magnesium (split dose) and fluid frontloading for maximum effect. The glycine should be taken in capsule form to avoid adding liquid volume that could counteract the benefit.

Mechanism

Glycine acts as a neurotransmitter, binding to NMDA receptors in the brainstem and suprachiasmatic nucleus, which calms the central nervous system and inhibits the micturition reflex. It also appears to modulate bladder nociceptors, reducing discomfort signals. This dual action delays the urge to urinate and allows longer uninterrupted sleep.

Personal experience

I am convinced that if I didn't have to get up to urinate in the middle of the night, I would probably sleep all the way through. ... my biggest issue is I almost always have to pee between 1:30 and 2:30 in the morning. ... if it could delay to 4 or 5 a.m. and I go to bed at 9:00, then I essentially made it through the whole night.

So, we're seeing that it suppresses the mcturan reflex. This essentially means that it's inhibiting some of the activity between the brain and the bladder, making it so that you don't have to use the restroom as much or have that sensation until you really have to go, not when it's just mild and waking you up.

Also said
“glycine is calming you down at a very significant level. Is basically mildly disassociating you.”— Explains the NMDA-mediated calming that underlies bladder suppression.
“it's affecting NMDA receptors and it's affecting the superchasmatic nucleus.”— Specifies the neurological targets.

Split magnesium dosing

WhatTake 250mg of magnesium with dinner and 250mg 1 hour before bed instead of a single 500mg dose.
WhenWith dinner and 1 hour before bed.
Dose250mg twice (total 500mg)
For whomPeople who take magnesium for sleep but find it increases nighttime urination.
WhyPrevents the diuretic effect of a large magnesium surge while maintaining sleep and bowel benefits.
CaveatsIndividual bowel tolerance may vary; adjust timing if GI discomfort occurs.

Thomas discovered that his usual 500mg magnesium before bed contributed to nocturia. By splitting the dose, he kept magnesium's calming and bowel-regulating effects without the urge to pee. He also notes that taking part of the dose with dinner may improve absorption and reduce GI side effects. This protocol works synergistically with glycine; he takes the second 250mg magnesium together with 3g glycine 1 hour before bed.

Mechanism

Magnesium regulates fluid balance; a large dose can signal the kidneys to excrete more water. Splitting the dose smooths the plasma concentration, reducing the peak diuretic effect.

Personal experience

I was taking 500 milligrams of magnesium. I started taking 250 and taking it a little earlier. I noticed a big effect... I started taking 250 milligrams of magnesium with my dinner and then 250 before bed rather than taking a full 500 right before bed.

Magnesium can also make you pee because it regulates fluid balance. So, what you need to start doing is actually increasing your glycine and taking a little less magnesium to test it out.

Also said
“So spacing out your magnesium dosing a little bit so you don't just have one big surge of magnesium in like sort of a an unnatural stage.”— Reinforces the rationale of avoiding a sudden diuretic spike.

Fluid frontloading

WhatDrink the majority of daily fluids in the morning with electrolytes, and limit fluid intake after 5pm.
WhenMorning hydration, tapering off by 5pm.
DoseNo specific volume; adjust to thirst.
For whomAnyone with nocturia, especially those who drink a lot in the evening.
WhyAligns fluid intake with circadian rhythm, reducing overnight bladder filling.
CaveatsMild evening thirst is normal; if very thirsty, a small sip is okay. Avoid caffeine or alcohol late.

Thomas personally struggled with enjoying tea before bed but now limits it to a quarter or half cup. He emphasizes that our bodies are adapted to go without water for hours, so evening thirst is manageable. He combines this with glycine and split magnesium for a comprehensive nocturia solution. The key is consistency: after a few days, the bladder adapts to holding longer.

Mechanism

The body's urine production follows a circadian pattern; frontloading ensures most fluid is processed during the day. Electrolytes in the morning enhance water retention, reducing the need to constantly drink.

Personal experience

I modulate my fluid after 5:00 p.m. Right? So, I frontload my day. ... I really enjoy drinking like some tea before bed. The reality is I just can't do it too much. So, what I've started doing is actually making like a consolidated quarter or half a cup of tea.

I modulate my fluid after 5:00 p.m. ... frontload your fluid in the morning, and then actually go throughout the evening with a little less water.

Also said
“Our bodies are absolutely accustomed and designed to be able to go periods of time without water.”— Supports the idea that evening thirst is not harmful.

Low-dose creatine for hydration

WhatTake a low dose of creatine in the morning to promote intracellular water retention.
WhenMorning.
DoseLow dose (unspecified, likely 2-5g)
For whomPeople who struggle with hydration or nocturia.
WhyHelps retain water inside cells, reducing the need to drink excessively and thus lowering nighttime urine output.
CaveatsEnsure adequate overall hydration; creatine draws water into muscles.
Mechanism

Creatine increases intracellular water content, improving cellular hydration and reducing the sensation of thirst, which can lead to less fluid intake later in the day.

A little bit of creatine can help too. And in this case, you could do just like a low dose of creatine in the morning to help you kind of retain water within the intracellular tissue, making it so you're not as dehydrated and not having to constantly flood fluid.

Evening carbohydrate consolidation

WhatConsolidate carbohydrate intake in the evening to maintain moderate insulin levels before bed.
WhenA few hours before bed.
DoseNot specified; a normal meal with carbs.
For whomThose on low-carb diets who experience increased nighttime urination.
WhyInsulin has an antidiuretic effect; low insulin levels increase urine production. Keeping insulin moderately elevated reduces nocturia.
CaveatsAvoid excessive carbs that disrupt sleep; aim for moderate, healthy levels.
Mechanism

Insulin promotes sodium and water reabsorption in the kidneys, reducing urine output. Low insulin, as seen in low-carb or fasted states, leads to increased urine production.

Lower levels of insulin are going to make you have to pee. So, if you have moderately normal, healthy levels of insulin when you go to bed, maybe a few hours before bed, you might have less instance of having to pee.

What's new

Personal practice updates, fresh positions, predictions

5 items

Glycine suppresses micturition reflex to reduce nocturia

New human study shows 3g glycine before bed reduces nocturnal voids and urgency by inhibiting brain-bladder signaling.

Why this matters: This explains why glycine improves sleep beyond its calming effect—it directly addresses the root cause of sleep disruption for many.

Background

Previous rodent studies hinted at spinal glycine effects on bladder, but this human trial confirms it.

The study, published in the Journal of Complementary and Alternative Medicine, gave subjects 3g glycine or placebo for 4 weeks. The glycine group had fewer total urinations, less urgency, and longer intervals before needing to void. Even when they did wake, the urge was delayed, often pushing the first bathroom trip from 1:30am to 4-5am. This is a game-changer for light sleepers who struggle to fall back asleep after getting up. The mechanism involves glycine acting as a neurotransmitter at the brainstem level, calming the suprachiasmatic nucleus and dampening the micturition reflex. It also appears to modulate bladder nociceptors, reducing discomfort signals. This dual central and peripheral action makes glycine uniquely effective for nocturia.

Personal experience

Thomas shares that he consistently wakes between 1:30-2:30am to pee and then lies in light, twilighty sleep. Using glycine, he can now delay that urge until 4-5am, effectively sleeping through the night since he goes to bed at 9pm.

So, we're seeing that it suppresses the mcturan reflex. This essentially means that it's inhibiting some of the activity between the brain and the bladder, making it so that you don't have to use the restroom as much or have that sensation until you really have to go, not when it's just mild and waking you up.

Also said
“glycine is calming you down at a very significant level. Is basically mildly disassociating you.”— Highlights the NMDA receptor-mediated calming effect that underlies the bladder suppression.
“it's affecting NMDA receptors and it's affecting the superchasmatic nucleus.”— Specifies the neurological targets involved in the mechanism.

Splitting magnesium dose to avoid nocturia

Instead of a single 500mg magnesium dose before bed, split it into 250mg with dinner and 250mg before bed to reduce diuretic effect.

Why this matters: Magnesium is a common sleep aid, but its fluid-regulating properties can ironically cause nighttime urination; splitting the dose mitigates this.

Background

Many people take magnesium at night for sleep and muscle relaxation, but high doses can increase urine output.

Thomas found that taking 500mg of magnesium right before bed made him need to pee more. Magnesium regulates fluid balance, so a large surge can prompt the kidneys to excrete more water. By splitting the dose—250mg with dinner and 250mg an hour before bed—he maintained magnesium's benefits for sleep and bowel regularity without the diuretic spike. He also notes that taking magnesium earlier with food may improve absorption and reduce GI side effects. This simple adjustment allowed him to keep magnesium in his stack while solving the nocturia issue.

Personal experience

I was taking 500 milligrams of magnesium. I started taking 250 and taking it a little earlier. I noticed a big effect... I started taking 250 milligrams of magnesium with my dinner and then 250 before bed rather than taking a full 500 right before bed.

Magnesium can also make you pee because it regulates fluid balance. So, what you need to start doing is actually increasing your glycine and taking a little less magnesium to test it out.

Also said
“So spacing out your magnesium dosing a little bit so you don't just have one big surge of magnesium in like sort of a an unnatural stage.”— Explains the rationale for splitting to avoid a sudden diuretic effect.

Fluid frontloading to reduce nighttime urination

Consume the majority of daily fluids in the morning with electrolytes, then taper off after 5pm to minimize overnight bladder filling.

Why this matters: A practical behavioral strategy that works with the body's natural circadian rhythm of urine production.

Background

Common advice is to avoid fluids before bed, but Thomas provides a structured approach: frontload with electrolytes to maintain hydration without evening thirst.

Thomas emphasizes that our bodies are designed to go periods without water, so feeling slightly thirsty in the evening is acceptable if you've hydrated well earlier. He uses electrolytes in the morning to enhance fluid retention and avoid excessive urination. By shifting the bulk of water intake to the first half of the day, the kidneys process it during waking hours, and the bladder isn't full at night. He also mentions that he enjoys tea before bed but now limits it to a quarter or half cup to minimize volume. This strategy, combined with glycine, dramatically reduced his nocturia.

Personal experience

I modulate my fluid after 5:00 p.m. Right? So, I frontload my day. So, one of the best ways to do this is just by having electrolytes in the morning, frontload your fluid in the morning, and then actually go throughout the evening with a little less water.

I modulate my fluid after 5:00 p.m. ... frontload your fluid in the morning, and then actually go throughout the evening with a little less water.

Also said
“Our bodies are absolutely accustomed and designed to be able to go periods of time without water.”— Counters the fear of evening thirst by reminding us of evolutionary adaptation.

Low-dose creatine in the morning for intracellular water retention

A small dose of creatine in the morning helps retain water inside cells, reducing the need to constantly drink and thus lowering nighttime urine volume.

Why this matters: Creatine is typically used for performance, but here it's repurposed as a hydration tool to combat nocturia.

A little bit of creatine can help too. And in this case, you could do just like a low dose of creatine in the morning to help you kind of retain water within the intracellular tissue, making it so you're not as dehydrated and not having to constantly flood fluid.

Consolidating carbohydrates in the evening to maintain insulin and reduce urination

Eating carbs in the evening keeps insulin levels moderately elevated, which reduces urine production overnight.

Why this matters: Contrarian to typical low-carb evening advice; leverages insulin's antidiuretic effect.

Lower levels of insulin are going to make you have to pee. So, if you have moderately normal, healthy levels of insulin when you go to bed, maybe a few hours before bed, you might have less instance of having to pee.

Recommendations

Products, supplements, and tools mentioned in the episode

3 items

Glycine

Supplement

An amino acid that also acts as a neurotransmitter. Used at 3g before bed to reduce nocturia and improve sleep.

Glycine is widely available as a powder or capsule. Thomas recommends capsules to avoid extra fluid. It's generally safe, but its NMDA receptor activity may cause mild dissociation in some. The human study used 3g for 4 weeks with no reported adverse effects. It's a cost-effective, non-pharmaceutical option for nocturia.

vs alternatives

Compared to prescription antidiuretics or alpha-blockers, glycine is a natural supplement with a favorable safety profile and additional sleep benefits.

Personal experience

Thomas personally takes 3g glycine 1 hour before bed and has experienced a significant delay in nighttime urination.

So, these studies were looking at 3 g of glycine which seems to be the going three grams of glycine in the clinical studies seems to be the most potent and you take it about an hour before bed.

Find Glycine

Magnesium

Supplement

A mineral used for sleep and muscle relaxation. Splitting the dose (250mg with dinner, 250mg before bed) prevents nocturia.

Magnesium is a common sleep aid, but its effect on fluid balance can increase urination if taken in a single large dose. Thomas recommends magnesium glycinate or other bioavailable forms. The split-dose protocol allows users to continue benefiting from magnesium without disrupting sleep.

vs alternatives

Other forms like magnesium citrate may have a stronger laxative effect; glycinate is gentler. Splitting the dose is a simple adjustment compared to switching supplements entirely.

Personal experience

Thomas reduced his magnesium from 500mg at once to 250mg twice daily and noticed less nighttime urination while maintaining bowel regularity.

I was taking 500 milligrams of magnesium. I started taking 250 and taking it a little earlier. I noticed a big effect... I started taking 250 milligrams of magnesium with my dinner and then 250 before bed rather than taking a full 500 right before bed.

Find Magnesium

Creatine

Supplement

A low dose in the morning helps retain intracellular water, reducing the need to drink excessively and thus lowering nighttime urine volume.

A little bit of creatine can help too. And in this case, you could do just like a low dose of creatine in the morning to help you kind of retain water within the intracellular tissue, making it so you're not as dehydrated and not having to constantly flood fluid.

Find Creatine
Disclosed sponsorships1speaker disclosed

Subco app

Tool Sponsored · disclosed

An app for researching supplements, logging your stack, and getting a trust score based on quality, rancidity, and clinical trials. The pro version offers personalized optimization.

DisclosureThomas DeLauer has a partnership with Subco; link in description and use code 'Thomas' at checkout.

Subco provides third-party testing data on supplements; for example, they tested five creatine brands and found two had no creatine. The app's trust score evaluates variables like quality and rancidity. Users can log their entire supplement stack and receive a score, and the pro version uses data points to build a custom supplement and nutrient plan. A chatbot assists with management. Thomas recommends it for anyone serious about supplement quality and routine optimization.

vs alternatives

Unlike other supplement databases, Subco offers third-party testing verification and a personalized stack optimizer.

Personal experience

Thomas uses the app and recommends the pro version. He mentions the creatine testing video as evidence of its rigor.

Subco. This is an app that you can use that allows you to research any supplement that you're looking to buy. They have this thing called a trust score that you can look at that evaluates all these different variables with supplements, right? So looking at their quality, their rancidity, any clinical trials, really cool stuff.

Also said
“you may have seen the video where Subco tested creatine brands and found that out of five, two didn't even have any creatine in them at all. So, they do third-party testing.”— Demonstrates the app's value in verifying supplement quality.
Find Subco

Notable quotes

Lines worth pulling out — contrarian, specific, or perfectly phrased

6 items
So, we're seeing that it suppresses the mcturan reflex. This essentially means that it's inhibiting some of the activity between the brain and the bladder, making it so that you don't have to use the restroom as much or have that sensation until you really have to go, not when it's just mild and waking you up.
Clearly explains the core mechanism of glycine for nocturia in accessible terms.
glycine is calming you down at a very significant level. Is basically mildly disassociating you.
A striking, memorable description of glycine's NMDA receptor effect that goes beyond typical sleep aid language.
I'd rather pee in the morning than the middle of the night.
A pithy, relatable summary of the goal of these protocols.
Why is this not talked about more? Because people search Google constantly to try to find a solution for nocura.
Highlights the gap between existing research and public awareness, emphasizing the value of this information.
Our bodies are absolutely accustomed and designed to be able to go periods of time without water.
Challenges the modern habit of constant sipping and supports the fluid frontloading strategy.
Lower levels of insulin are going to make you have to pee.
A counterintuitive insight linking diet (low-carb) to nocturia, offering a simple dietary tweak.

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Topics covered

glycinenocturiamicturition-reflexnmda-receptorsuprachiasmatic-nucleusmagnesium-dosingfluid-frontloadingcreatine-hydrationcarbohydrate-timinginsulin-antidiuretic-effectsubco-appsleep-qualitysupplement-safety
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