Sleeping is a way for our brains to flash out all the toxins that accumulated in the brain throughout the day. A kind of human garbage collector.
I never limit my sleep and I try to sleep as much as my body needs thus I wake up with no alarm.
I try to go to bed at the same time each day to maintain the Circadian rhythm.
Pod Pro - Smart cooling mattress.
[Sleep Loss Can Cause Death through Accumulation of Reactive Oxygen Species in the Gut](https://www.cell.com/cell/pdf/S0092-8674(20)30555-9.pdf)