[maverick2]

I think the sleep and productivity times vary with age, food, and stress levels. I used to be a late nighter almost all of my teen life into the early 20s. But have now become early(rather super early) riser.

As expected light plays a huge role in altering sleep cycles. All my devices go into blue light mode around 5:30 pm, and same with Hue lights at home. And the lights turn on to 6500K ~30 mins before my alarm goes off. If for some reason my lights do no turn on I still find in hard to wake-up at 2 just with an alarm.

As for food, I've noticed on days my diet is heavy in red meat, and fats I tend to sleep longer.