Fight week throws fighters into a weird rhythm: weigh-ins Friday morning, then...

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

Fight week throws fighters into a weird rhythm: weigh-ins Friday morning, then a long wait before the doors open at 6 pm. Many find themselves wide awake at 2 or 4 am, or barely hitting the sack around 4 or 5 am