Fight week can shred a fighter's sleep. Early Friday weigh-ins throw off...

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

Fight week can shred a fighter's sleep. Early Friday weigh-ins throw off rhythms while waiting six hours in cramped locker rooms adds stress. Many wake between 2 and 4 a.m., tossing and turning until the doors open at 6 p.m