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

https://zulu-wiki.win/index.php/How_Do_You_Dim_Light_After_the_Evening_Meal_on_Fight_Week%3F

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