Circadian rhythms are also worth taking into account when thinking about this stuff. There's a bactrian-camel dip in the middle of the day. Siesta time. Most p

Circadian rhythms are also worth taking into account when thinking about this stuff. There's a bactrian-camel dip in the middle of the day. Siesta time. Most people have highest energy levels between 9 and 12, and then 4-ish to 7 or 8.