Sleep Optimization
Master your circadian rhythm with science-backed sleep architecture, environmental optimization, supplement timing, and recovery protocols.
Priority sleep guides
Why Sleep is Your Longevity Superpower
Sleep isn't just rest—it's when your brain clears metabolic waste via the glymphatic system, muscles repair, hormones rebalance, and memories consolidate. Poor sleep accelerates aging, impairs cognition, disrupts metabolism, and increases disease risk. The goal: 7-9 hours of deep, consolidated sleep with consistent timing.
Sleep Architecture 101
A complete sleep cycle is ~90 minutes and progresses through 5 stages:
N1 (Light Sleep)
Transition from wake. Heart rate slows, brain waves slow.
N2 (Light Sleep)
Core light sleep. Sleep spindles (brief bursts) consolidate learning.
N3 (Deep Sleep)
Restorative deep sleep. Glymphatic clearance, growth hormone surge, muscle repair.
REM (Rapid Eye Movement)
Dream sleep. Memory consolidation, emotional processing, brain plasticity.
Key insight: Most deep sleep happens in cycles 1–3. Most REM happens in cycles 4–5. Waking during REM leaves you groggy; waking during N2 is gentler. Sleep trackers estimate these stages via movement + heart rate variability.
Circadian Rhythm Mastery
Your circadian rhythm is a ~24-hour internal clock regulated by light, temperature, food timing, and exercise. Syncing it amplifies energy, sleep depth, and metabolic health.
The Circadian Timeline
Rule: Keep sleep/wake times within ±30 minutes every day, including weekends. Consistency beats duration.
Sleep Environment Optimization
Temperature
65–68°F (18–20°C)Facilitates heat dissipation; core temp drop triggers deep sleep.
Light
0–5 lux (complete darkness)Blocks melatonin suppression. Use blackout curtains or eye mask.
Sound
30–40 dB (quiet)Noise fragments sleep. White noise or earplugs help if unavoidable.
Humidity
40–60%Prevents airway drying; reduces sleep disruption.
Blue Light
Zero after 20:00 (8 PM)Blue light suppresses melatonin ~2–3 hrs. Use blue-light glasses if needed.
Pro tip: Test one variable at a time. Track sleep quality for 2 weeks before making changes. Use wearables (WHOOP, Oura, Garmin) to measure deep sleep %, REM %, and efficiency.
Sleep Stack: Supplements & Timing
Caveat: Supplements are optional if sleep basics (light, temperature, consistency) are dialed in. Start with behavioural changes first.
Magnesium Glycinate
200–400 mgCalms nervous system, improves sleep quality. Glycinate form doesn't cause loose stools.
View product →Melatonin
0.5–3 mgSignals circadian rhythm if shifting schedule or jet lag. Less needed if circadian-aligned.
View product →L-Theanine
100–200 mgPromotes relaxation via GABA. Stacks well with magnesium.
View product →Apigenin (from chamomile)
50–100 mgMild anxiolytic; doesn't reduce alertness next day.
View product →Magnesium Threonate
2 gCrosses blood-brain barrier; may enhance REM quality.
View product →Sample Bedtime Routine (21:00)
20:00 — Dim lights, put on blue-light glasses
20:15 — Magnesium glycinate + apigenin with dinner
20:45 — L-theanine + glycine with herbal tea (chamomile, passionflower)
21:00 — Melatonin 1 mg (if needed)
21:30 — Lights off, 65°F, dark silent room
Troubleshooting: Common Sleep Issues
Can't Fall Asleep (Sleep Onset Insomnia)
- Ensure zero blue light 2+ hrs before bed
- Increase magnesium glycinate to 400 mg
- Add L-theanine 200 mg
- Avoid caffeine after 14:00
- Try 4–7–8 breathing: inhale 4, hold 7, exhale 8
Wake at 3 AM (Mid-Sleep Insomnia)
- Check room temperature (too warm?)
- Add glycine 5 g before bed
- Reduce alcohol (disrupts REM)
- Try magnesium threonate 2 g
- Rule out sleep apnea (seek testing if snoring)
Can't Get Deep Sleep
- Increase exercise (Zone 2 cardio + strength)
- Cool room to 65°F
- Add magnesium glycinate + glycine
- Use red light therapy 30 min before bed (increases melatonin)
- Track with wearable to validate changes
Groggy in Morning (Sleep Inertia)
- Get bright light within 30 min of wake
- Cold shower or splash
- Skip melatonin (or reduce dose)
- Check sleep debt (need 7–9 hrs consistently)
Sleep Tracking: Wearables That Matter
Sleep trackers estimate sleep stages via heart rate variability (HRV), movement, and breathing. No wearable measures sleep perfectly, but consistency matters—track trends, not absolute values.
Action: Pick one tracker and use it consistently for 4 weeks. Log what you changed (supplements, room temp, bedtime, exercise). Correlate your changes with sleep score improvements.
Important Disclaimer
This is educational content, not medical advice. Sleep disorders (sleep apnea, restless leg syndrome, insomnia disorder) require professional diagnosis. Consult a sleep specialist or doctor before starting supplements, especially if you take medications or have health conditions. Melatonin can interact with blood thinners and other drugs.
Quick Summary
7–9 hours
±30 min every day
Magnesium, melatonin, glycine
Temperature, light, darkness, silence