Fight week throws athletes into a tough sleep cycle. Early weigh-ins Friday...

https://kylersbestjournals.capitaljays.com/posts/how-media-day-call-times-wreck-fight-week-sleep

Fight week throws athletes into a tough sleep cycle. Early weigh-ins Friday morning and locker rooms open at 6 PM mean fighters often get to bed around 4 or 5 AM. Waking between 2 and 4 AM throws off rest just when focus is key