Sleep Schedules & Needs

From my experiments: The best sleep schedule for humans is polyphasic in the summer (±5h at night, 90 min during the day) and monophasic during the winter (8-10h sleep at night; no nap during the day). It’s best to wake up with the onset of the morning dawn (slightly before sunrise).

It is natural for humans to wake up with the sunrise. In the summer, the sun is rising earlier and setting later. This is why I believe during the summer, it's better to go to bed later and wake up earlier with overall less sleep (5h or even less) and have a siesta nap (20 or 90 minutes) during the hot summer noon.

Other observations: the more you meditate and the more raw food you eat, the less sleep you’ll need naturally.