Oakwell
Pillar 04 · Recovery

Sleep — the foundation under everything else.

No supplement, workout, or diet can compensate for chronic sleep loss. Get this one right and almost every other health metric improves on its own.

How much sleep do you need?

The answer for most healthy adults is 7–9 hours. Some genuinely need 9. Almost no one is the rare short-sleeper variant they think they are. If you wake naturally without an alarm and feel sharp for the first half of the day, you're getting enough. If you rely on caffeine to function before noon, you're not.

1 in 3US adults sleep less than 7 hours
~90 minaverage length of one sleep cycle
65–68°Fideal bedroom temperature for most

Sleep architecture in plain English

Each night you cycle through light sleep, deep (slow-wave) sleep, and REM. Deep sleep dominates the first half of the night and is when the body repairs tissue and consolidates declarative memory. REM dominates the second half and is essential for emotional processing and learning. Cutting your night short cuts REM disproportionately.

Circadian rhythm

You have a master clock in your brain that's tuned by light, food, and activity. You can either work with it or fight it.

  • Morning sunlight within 30–60 minutes of waking — 5–10 minutes outside, even on cloudy days, is a powerful zeitgeber.
  • Dim the evenings. Bright overhead lighting after sunset suppresses melatonin.
  • Eat in a consistent window. Late-night meals push back your sleep clock.
  • Wake at the same time every day, including weekends. Bedtime will follow.

The bedroom environment

  • Cool — 65–68°F suits most adults.
  • Dark — blackout curtains, no LEDs visible.
  • Quiet — earplugs or white noise if needed.
  • Phone-free — leave it across the room or in another room entirely.
  • For sleeping and sex only — work and TV condition your brain to be alert in bed.

A simple wind-down routine

  1. ~3 hours before bed: last meal.
  2. ~2 hours before bed: dim the lights, switch to lamps.
  3. ~1 hour before bed: hot shower or bath, screens off, read or stretch.
  4. 30 minutes before bed: in bed, lights out, optional audiobook or breathwork.
Caffeine cutoff: 8–10 hours before bed for most people. Caffeine has a half-life of 5–6 hours; that 2pm latte is still working at 10pm.

Tracking

You don't need a wearable to sleep well, but if you like data, an Oura Ring, Whoop, Apple Watch, or Garmin will reliably surface trends — especially around alcohol, late meals, and training stress.

Helpful gear

Light

Hatch / Loftie alarm

Sunrise wake + dim red night-light replace your phone-as-alarm-clock habit.

Mask

Manta Sleep Mask

Eye-cup design blocks light without pressure on the eyes.

Sound

LectroFan / Yogasleep Dohm

True white-noise machines outperform phone apps.

Cool

Chilipad / Eight Sleep

Worth it if you sleep hot or share a bed with someone who does.

Quick-win checklist

  • Same wake time every day, weekends included.
  • Sunlight on your face within an hour of waking.
  • No caffeine after late morning.
  • Cool, dark, quiet, phone-free bedroom.
  • 30-minute wind-down before bed, screens off.