Sleep Timing, Circadian Rhythm & What Actually Works (Q&A with Dr. Greg Potter)

Sleep Timing, Circadian Rhythm & What Actually Works (Q&A with Dr. Greg Potter)

S
Siim Land
15 Video Views·Apr 17, 2026

Dr. Greg Potter has a PhD from the University of Leeds in sleep, nutrition, and metabolism.
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Timestamps:
00:00 Intro
00:45 Catchup
02:05 Are circadian rhythms nature or nurture
09:55 What’s ideal timing of sunlight exposure for circadian anchoring
15:25 Bon Charge sponsorship
20:30 Does creatine increase DHEA or DHT levels
25:50 Does creatine reduce sleep quality
33:25 Greg’s new podcast
36:15 Is more REM sleep better
42:05 How to optimize REM sleep
44:25 What % of different sleep cycles should we get (light, deep, REM)
46:10 Is food processing good or bad
52:45 Incline bed therapy
55:20 Is it bad to use sleep herbs
58:45 Does melatonin supplementation stop natural production
01:01:15 What to do if you wake up at night and can’t fall back asleep

Greg Potter YouTube Channel: https://www.youtube.com/@gregpotterphd

My 2026 longevity routine: https://youtu.be/OceysodInIo

Start rewinding your biological clock: https://www.siimland.co/course

P.S. This is not professional medical advice and should not be taken as such. The creator of this video is not held accountable for your health. Consult your doctor first.