You can’t fix what you don’t track.
Sleep affects everything — energy, cravings, mood, metabolism, and how long you live.
Tracking your sleep doesn’t mean obsessing over numbers.
It means noticing patterns that can help you feel and perform better.
Which data to look for?
Start simple — check these 3 daily metrics:
Total sleep time 🕒 (aim for 7.5–9 hrs)
Sleep consistency 🧭 (same bedtime/wake time = better recovery)
Resting heart rate ❤️ (lower = better recovery and healthspan)
Optional (if device supports it):
Sleep stages (deep, REM, light)
HRV (Heart Rate Variability = nervous system recovery)
Respiratory rate (can flag early illness)
“Sleep is the foundation. No amount of biohacking will replace it.”
— Andrew Huberman
How to do it?
Pick a device you trust (or just use a journal for now)
Haku prefers using an Apple Watch to integrate with Apple's Health app.
But he will integrate that in his app later!
Track:
Time in bed
Time asleep
Bedtime / wake time
Try this today
Check last night’s sleep:
How long did you sleep?
What time did you fall asleep and wake up?
How do you feel today?
Lesson Complete!
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