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Routine & sleep

A day built around your body clock

This schedule isn't built from your current habits. It's what the research supports. Pick a wake time you can keep, then work towards it.

The day to aim for

Pick a wake time you can keep every day. The rest of the schedule moves with it, keeping the same spacing and a sleep window of about 8 hours.

Wake 6:30 AMLights out 10:30 PM≈ 8 h in bed
  1. 6:30 AM

    Wake up and get outdoor daylight

    Bright morning light is the strongest signal for setting your body clock, and it helps you feel alert.[1]

  2. 6:45 AM

    Drink water and move a little

    A glass of water and a few minutes of easy movement help you wake up.

  3. 7:15 AM

    Breakfast with protein

    Including protein at breakfast helps keep you full through the morning.[13]

  4. 8:30 AM

    Hardest focus work

    Many people feel most alert in the late morning. Use this time for work that needs deep concentration.

  5. 12:00 PM

    Midday daylight or a short walk

    Daylight during the day strengthens your body clock.[1]

  6. 12:30 PM

    Lunch — your main meal for carbohydrates

    Your body handles blood sugar better earlier in the day than late in the evening.[10]

  7. 1:00 PM

    Walk for 10 minutes after eating

    A short walk after a meal lowers the rise in blood sugar.[2]

  8. 1:30 PM

    Last caffeine of the day

    A 2023 meta-analysis found that a typical cup of coffee should be finished about 9 hours before bed to avoid reducing sleep.[3]

  9. 3:30 PM

    Good time for hard training

    Strength and power tend to peak in the late afternoon. That said, training at the same time each day matters more than the exact hour.[4]

  10. 7:00 PM

    Dinner — finish at least 3 hours before bed

    Eating within 3 hours of bedtime is linked to more acid reflux.[5]

  11. 9:00 PM

    Dim the lights and put screens away

    Bright light in the evening delays melatonin, the hormone that makes you sleepy, so you fall asleep later.[6]

  12. 9:30 PM

    Wind down

    A warm shower or bath 1–2 hours before bed helps you fall asleep faster.[7]

  13. 10:30 PM

    Lights out — at least 7 hours before your alarm

    Adults need 7 hours or more. Going to bed at the same time each night matters too: sleep regularity predicted mortality even more strongly than sleep length.[8,9]

If you work night shifts or have a sleep disorder, your timing needs to be planned individually with a doctor.

How far is your current schedule from that?

You sleep 7.8 h

  • Going to bed between 1 and 5 AM usually means little morning light and a clash with work or school hours, which leads to catch-up sleep at weekends ("social jet lag").

How to shift gradually

Aim for bed at 10:30 PM and waking at 6:30 AM. Move both 15–30 minutes earlier every 2–3 days. Get bright light when you wake, and keep lights dim after sunset.

Your body clock, relative to your wake time

These rhythms move with your schedule, age and genetics, so they're shown relative to the wake time you picked (6:30 AM) rather than as fixed clock times.

12a3a6a9a12p3p6p9p12aWAKE
Cortisol. Peaks about 30–45 minutes after waking (the cortisol awakening response).[11]
Melatonin. Rises in the evening before your usual bedtime. Bright evening light delays it.[6]
Body temperature. Lowest in the last hours of sleep, highest late in the day, when strength and power tend to peak.[4]

Shaded = sleep window. The curves are simplified shapes, not measurements.

§ 01Sleep architecture

What happens while you sleep

AwakeREMLightDeep0h2h4h6h8h
Fig. — A typical night (simplified)
Light sleep (N1–N2)
About half the night
The bulk of sleep. Heart rate and breathing slow down, and memory processing begins.
Deep sleep (N3)
Mostly early in the night
The most restorative stage. It's when growth hormone release peaks and your body does most of its physical recovery.
REM sleep
Longer towards morning
Dreaming happens here, and it's important for emotional memory and learning. In men, testosterone rises during sleep and is linked to the first REM period.[12]
The ~90-minute cycle
4–6 cycles a night
You move through the stages about every 90 minutes. Cutting sleep short mostly costs you REM sleep, which is concentrated in the final cycles.

References

  1. 1.Effects of light on human circadian rhythms, sleep and mood. Somnologie, 2019.doi:10.1007/s11818-019-00215-x
  2. 2.The acute effects of interrupting prolonged sitting time with standing and light-intensity walking: systematic review and meta-analysis. Sports Medicine, 2022.doi:10.1007/s40279-022-01649-4
  3. 3.The effect of caffeine on subsequent sleep: a systematic review and meta-analysis. Sleep Medicine Reviews, 2023.doi:10.1016/j.smrv.2023.101764
  4. 4.The effect of training at a specific time of day: a review. Journal of Strength and Conditioning Research, 2012.doi:10.1519/jsc.0b013e31825770a7
  5. 5.Association between dinner-to-bed time and gastro-esophageal reflux disease. American Journal of Gastroenterology, 2005.doi:10.1111/j.1572-0241.2005.00354.x
  6. 6.Evening use of light-emitting eReaders negatively affects sleep, circadian timing, and next-morning alertness. PNAS, 2015.doi:10.1073/pnas.1418490112
  7. 7.Before-bedtime passive body heating by warm shower or bath to improve sleep: systematic review and meta-analysis. Sleep Medicine Reviews, 2019.doi:10.1016/j.smrv.2019.04.008
  8. 8.Recommended amount of sleep for a healthy adult: joint consensus statement of the AASM and Sleep Research Society. Sleep, 2015.doi:10.5665/sleep.4716
  9. 9.Sleep regularity is a stronger predictor of mortality risk than sleep duration: a prospective cohort study. Sleep, 2024.doi:10.1093/sleep/zsad253
  10. 10.Circadian regulation of glucose, lipid, and energy metabolism in humans. Metabolism, 2018.doi:10.1016/j.metabol.2017.11.017
  11. 11.The cortisol awakening response (CAR): facts and future directions. International Journal of Psychophysiology, 2009.doi:10.1016/j.ijpsycho.2008.03.014
  12. 12.Relationship between rapid eye movement sleep and testosterone secretion in normal men. Journal of Andrology, 1999.doi:10.1002/j.1939-4640.1999.tb03378.x
  13. 13.The role of protein in weight loss and maintenance. American Journal of Clinical Nutrition, 2015.doi:10.3945/ajcn.114.084038

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