Comment by gexla

I think everyone gets a second wind in the late hours.

I used to have a schedule where I would start nodding off at 8PM and had to sleep, then wake up within 10 minutes of 4AM the next morning. My whole day was on such a routine, I never had to check the time. I could tell by temperature, sun, what I was doing, how I felt (hungry, tired) what time it was. I would be at my highest energy for the first hours after waking up. Then my energy would plunge during midday. Then it would build back up leading into the evening until I couldn't keep my eyes open anymore. Maybe 4 to 8PM I would be at good energy until I hit the abrupt cliff. I guess I was sort of a morning AND night person. I had to train my body to get on this schedule.