Fight week throws sleep out the window. Boxers often hit the sack around 4...

https://www.strobe-bookmarks.win/fight-week-isn-t-just-about-training-sleep-takes-a-serious-hit-with-friday

Fight week throws sleep out the window. Boxers often hit the sack around 4 a.m., wake at 2-4 a.m., then spend six hours locked in a cramped locker room before Friday’s early weigh-ins