Fight week sleep has its own rhythm — fighters often find themselves waking...

https://tiny-wiki.win/index.php/Does_Blood_Pressure_and_Heart_Rate_Take_Time_to_Normalize_After_a_Cut%3F

Fight week sleep has its own rhythm — fighters often find themselves waking between 2 and 4 am, restless before weigh-ins and long waits in cramped locker rooms