You are not someone to dictate what a "proper" sleep cycle is. There is no such thing as a proper sleep cycle.
Healthy and not in the middle of the day so you can sleep at night are better than stay up all night and sleep through first period or the first few hours of your job. Unless you have a night shift, but I don't think mega science has a graveyard shift.
Hey, guys, do you want to explain to me how your sleep cycles are relevant to minecraft AT ALL?
There are beds in minecraft.