Fight week isn’t just about training. Fighters often hit the sack around 4 or 5...

https://weekly-wiki.win/index.php/Why_Is_Friday_Night_Before_the_Fight_the_Worst_Sleep%3F

Fight week isn’t just about training. Fighters often hit the sack around 4 or 5 am, especially after Friday morning weigh-ins. Then there’s the long wait—sometimes six hours in a locker room before doors open at 6 pm