I'm pretty sure i would crash the whole next day even if i managed to stay awake with coffee the previous night.

I'm convinced some people have a special gift in terms of # of hours of sleep required. Some famous people like Churchill and Thatcher just needed 4 or 5 hours of sleep. I envy such people. I am in my mid 40s and also awake at 2am but I need 8 hours of sleep. Powered by coffee at the moment :D

Motivation plays a huge role. I’ve been both ambitious and unambitious at various times in my life.

When you’re sufficiently motivated you have energy for everything aligned with your goal. When you’re not, nothing is aligned, and you have no energy.

Yeah that would align with my energy and my girlfriend both coming and going at the same time