Deep sleep, REM, and morning clarity.
Sleep isn't rest. Sleep is when your body does its most important work. Deep sleep is when growth hormone peaks, tissue repair accelerates, and the glymphatic system clears metabolic waste from the brain. REM sleep is when memories consolidate and emotional processing happens. Miss either of these stages consistently, and the downstream effects touch every system in your body.
This stack is designed for someone actively seeking to optimise their precision sleep. If this resonates with where you are right now, this is your starting point.
Deep Sleep, REM, and Morning Clarity
Who Is This For?
This stack is designed for someone actively seeking to optimise their precision sleep. If this resonates with where you are right now, this is your starting point.
Sleep isn’t rest. Sleep is when your body does its most important work. Deep sleep is when growth hormone peaks, tissue repair accelerates, and the glymphatic system clears metabolic waste from the brain. REM sleep is when memories consolidate and emotional processing happens. Miss either of these stages consistently, and the downstream effects touch every system in your body. Here’s something most people don’t know: falling asleep requires your core body temperature to drop. It’s a physiological trigger. Glycine at 3g induces peripheral vasodilation—widening blood vessels in your hands and feet—which releases heat from your core, mimicking the natural temperature drop that signals sleep onset. Polysomnography (the gold standard of sleep measurement) confirmed significantly fewer awakenings in the glycine group. Magnesium L-threonate crosses the blood-brain barrier and directly supports deep sleep and REM architecture. Melatonin sustained-release maintains levels throughout the night for sleep maintenance. Together, this is a protocol built on the physics of sleep, not just a hope that something will make you drowsy.
This stack contains 3 active ingredients, optimised for daily consistency. Total daily commitment: 3 caps + powder, taken All PM (1–2 hours before bed). Pair with: Precision Glycine™ 3g/day | Precision Creatine™ 5g/day | Precision Fibre™ 5–10g/day
Ingredient Dose Timing Role in This Formula Magnesium L-Threonate 2g (AOR or DFH NeuMag) 2g (approx 145mg elemental Mg) 1–2h before bed Brain-bioavailable magnesium—deep and REM sleep, HRV, cognitive readiness Glycine 3g (Precision Glycine™) 3g powder 30–60 min before bed Core temperature reduction via vasodilation, sleep fragmentation reduction Melatonin SR 1–3mg (AOR or CanPrev) 1–3mg 30–60 min before bed Sleep onset, sleep quality, circadian rhythm—SR for maintenance
Below is a summary of the research supporting each component. We’ve included formal citations so you can dig deeper if you want to.
RCT (80 adults, 21 days, Oura ring measures): magnesium L-threonate group maintained sleep quality while placebo declined; significant improvements in deep sleep score, REM sleep score, light sleep time, HRV, readiness score, and activity balance. Also improved mood, energy, and alertness the following day. This is the only magnesium form shown to cross the blood-brain barrier in meaningful concentrations—standard magnesium forms don’t achieve brain magnesium elevation at supplement doses.
Glycine lowers core body temperature by dilating peripheral blood vessels—replicating the physiological drop that normally triggers sleep onset. RCT of collagen peptides (glycine-rich, 15g): polysomnography confirmed significantly fewer sleep awakenings (21.3 vs 29.3, p=0.028) and improved next-morning cognitive performance. Exceptionally well-tolerated with no known adverse effects at this dose.
Meta-analysis of 23 RCTs: melatonin supplementation significantly improved sleep quality scores. Sustained-release formulation maintains melatonin levels throughout the night rather than producing a single early spike. Use the lowest effective dose (1mg is often sufficient)—higher doses don’t proportionally improve sleep and may increase next-day grogginess.
Before starting any new supplement, please review these clinical considerations. If you’re on prescription medications, share this page with your healthcare provider.
Melatonin SR
May cause next-morning drowsiness, particularly at higher doses. Avoid driving or operating heavy machinery until you understand your individual response. Share with your prescribing physician if you are on blood-thinning medications, anticonvulsants, or immunosuppressant medications.
Magnesium L-Threonate
May have additive sedative effects when combined with benzodiazepines, muscle relaxants, or alcohol—do not combine. Very well tolerated at the doses used in this formula.
Important distinction
Precision Sleep is designed for physiological sleep difficulty without a significant stress component. If your sleep difficulty is primarily driven by anxiety, racing thoughts, or elevated cortisol, Precision Stress Management may be the more appropriate starting point. Not sure which fits? Book a coaching session and we’ll help you sort it out.
These statements have not been evaluated by Health Canada or the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease.
The evidence summaries provided are for educational purposes and represent published research findings. Individual results may vary. The research cited reflects the current body of evidence as of the date of publication and may be updated as new studies emerge.
This product is a wellness supplement, not a prescription medication. It is not a substitute for medical advice, diagnosis, or treatment. Always consult your healthcare provider before starting any new supplement, especially if you are pregnant, nursing, taking medication, or have a pre-existing health condition.
Some ingredients in this formula may interact with prescription medications. Please review the Important Considerations section above and share this information with your prescribing physician.
CPSO Compliance Note (Internal): All content on this page is educational and wellness-focused. No diagnostic or prescriptive claims are made. Content complies with CPSO advertising guidelines for health professionals in Ontario.
Most people don’t need just one stack. Consider combining with:
Glycine and magnesium L-threonate can improve sleep quality within 3-7 days. Melatonin effects on sleep onset appear immediately, but sustainable effects build over 1-2 weeks. Most people notice meaningful improvement in sleep quality within the first week, though it takes 3-4 weeks to know if this is truly transformative for you.
All three ingredients are safe for nightly long-term use. Unlike some sleep aids, there’s no tolerance buildup documented with these compounds. Use nightly and assess if it’s working. If sleep improves and stays improved, you may eventually need to taper. But there’s no built-in reason to cycle.
SSRIs can affect sleep quality, which is exactly why this formula might be useful. However, melatonin can interact with some SSRIs, and magnesium can affect medication absorption timing. This is a pharmacist conversation, not a guessing game. Check with your prescribing physician or pharmacist before starting.
This formula is designed for sleep onset and sleep architecture, not for middle-of-the-night awakenings. If 3am awakenings are your issue, that pattern usually points to cortisol dysregulation, blood sugar drops, or sleep apnea—not magnesium deficiency. This formula may help, but it’s worth exploring the root cause with your healthcare provider.
The following studies support the evidence presented above:
Abbasi, B., et al. (2012). The effect of magnesium supplementation on primary insomnia in elderly. Journal of Research in Medical Sciences.
Yamadera, W., et al. (2007). Glycine ingestion improves subjective sleep quality in human volunteers. Sleep and Biological Rhythms.
Lemoine, P., et al. (2007). Prolonged-release melatonin improves sleep quality and morning alertness in insomniacs aged 55 years and older. Journal of Pineal Research.
| Ingredient / Detail | Dose / Value | Timing | Why It Matters |
|---|---|---|---|
Magnesium L-Threonate 2g (AOR or DFH NeuMag) Brain-bioavailable magnesium Timing: 1-2h before bed Deep and REM sleep, HRV, cognitive readiness | 2g (approx 145mg elemental Mg) | 1-2h before bed | Deep and REM sleep, HRV, cognitive readiness |
Glycine 3g (Precision Glycine™) Amino acid Timing: 30-60 min before bed Core temperature reduction via vasodilation, sleep fragmentation reduction | 3g powder | 30-60 min before bed | Core temperature reduction via vasodilation, sleep fragmentation reduction |
Melatonin SR 1-3mg (AOR or CanPrev) Sustained-release melatonin Timing: 30-60 min before bed Sleep onset, sleep quality, circadian rhythm - SR for maintenance | 1-3mg | 30-60 min before bed | Sleep onset, sleep quality, circadian rhythm - SR for maintenance |
Here's something most people don't know: falling asleep requires your core body temperature to drop. It's a physiological trigger. Glycine at 3g induces peripheral vasodilation - widening blood vessels in your hands and feet - which releases heat from your core, mimicking the natural temperature drop that signals sleep onset. Polysomnography (the gold standard of sleep measurement) confirmed significantly fewer awakenings in the glycine group.
Magnesium L-threonate crosses the blood-brain barrier and directly supports deep sleep and REM architecture. Melatonin sustained-release maintains levels throughout the night for sleep maintenance. Together, this is a protocol built on the physics of sleep, not just a hope that something will make you drowsy.
Educational summary. Not a substitute for personalised medical advice.
RCT (80 adults, 21 days, Oura ring measures): magnesium L-threonate group maintained sleep quality while placebo declined; significant improvements in deep sleep score, REM sleep score, light sleep time, HRV, readiness score, and activity balance. Also improved mood, energy, and alertness the following day. It is the only magnesium form shown to cross the blood-brain barrier in meaningful concentrations.
Glycine lowers core body temperature by dilating peripheral blood vessels - replicating the physiological drop that normally triggers sleep onset. RCT of collagen peptides, which are glycine-rich, confirmed significantly fewer sleep awakenings and improved next-morning cognitive performance. Exceptionally well-tolerated with no known adverse effects at this dose.
Meta-analysis of 23 RCTs: melatonin supplementation significantly improved sleep quality scores. Sustained-release formulation maintains melatonin levels throughout the night rather than producing a single early spike. Use the lowest effective dose (1mg is often sufficient) - higher doses don't proportionally improve sleep and may increase next-day grogginess.
Melatonin SR may cause next-morning drowsiness, particularly at higher doses. Avoid driving or operating heavy machinery until you understand your individual response. Share with your prescribing physician if you are on blood-thinning medications, anticonvulsants, or immunosuppressant medications.
Magnesium L-Threonate may have additive sedative effects when combined with benzodiazepines, muscle relaxants, or alcohol - do not combine. Very well tolerated at the doses used in this formula.
Important distinction: Precision Sleep is designed for physiological sleep difficulty without a significant stress component. If your sleep difficulty is primarily driven by anxiety, racing thoughts, or elevated cortisol, Precision Stress Management may be the more appropriate starting point. Not sure which fits? Book a coaching session.
Important. These statements have not been evaluated by Health Canada or the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease. The evidence summaries provided are for educational purposes only and represent published research findings - they are not claims about this specific product's ability to treat any condition. If you are pregnant, nursing, taking medication, or have a health condition, please consult your healthcare provider before use.