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

https://www.pawn-bookmarks.win/fight-week-can-wreck-even-the-best-fighter-s-sleep-early-weigh-ins-friday

Fight week sleep is a struggle. Fighters often hit the sack around 4 or 5 am after late-night prep and wake up at 2 or 4 am, leaving their bodies running on empty