Fight week throws sleep out the window—fighters often wake between 2 and 4 am,...

https://www.fightful.com/boxing/fight-week-the-sleep-problem-nobody-talks-about/

Fight week throws sleep out the window—fighters often wake between 2 and 4 am, chasing early weigh-ins. Then there's the long wait: six hours in a locker room before doors open at 6 pm