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

https://www.toro-bookmarks.win/fight-week-is-brutal-for-sleep-fighters-often-hit-the-sack-around-4-or-5-am

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.