Fight week sleep is a killer. Fighters often hit the sack around 4 or 5 am but...

https://www.nav-bookmarks.win/fight-week-throws-a-curveball-at-even-the-toughest-fighters-early-weigh-ins

Fight week sleep is a killer. Fighters often hit the sack around 4 or 5 am but have to be up between 2 and 4 for weigh-ins Friday morning. Add six hours in a noisy locker room before doors open at 6 pm, and it’s no wonder sleep doesn't stand a chance.