Fight week is tough on sleep. Fighters often hit the sack around 4 or 5 am,...

https://yenkee-wiki.win/index.php/Should_the_Locker_Room_Lights_Stay_Low_Before_Warm_Ups%3F_Navigating_Fight_Week_Chaos_and_Circadian_Disruption

Fight week is tough on sleep. Fighters often hit the sack around 4 or 5 am, waking up hours later before weigh-ins Friday morning. Long hours in the locker room and early event doors at 6 pm only add to the challenge