I used to do it in army. Just roughly 20mins of nap and warmth can really get you back on the feet, just enough boost to survive the day. And after some time yo

I used to do it in army. Just roughly 20mins of nap and warmth can really get you back on the feet, just enough boost to survive the day. And after some time you don't even need to set the alarm, you just wake up, brain learns the routine.