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

https://lorenzoscoolchat.novacrestiq.com/posts/why-does-the-sport-put-main-events-at-1-am-local-time

Fight week throws sleep out the window. Fighters often hit the sack around 4 or 5 am after stressful weigh-ins Friday morning. Long waits in tight locker rooms and early doors at 6 pm only make it harder to catch rest when it counts