Heart rate variability in female athletes can drop into the 50s and 60s during periods of high stress, such as finals week, characterized by sleep deprivation, intense studying, and reduced physical activity.

“each of them drop into the 50s 60s sometimes even 7 no 70s sometimes down the 50s which is in Morpheus that's the stress yeah that was the stress of finals week it's 2 3 4 days of not getting much sleep and you know studying a lot and just working out very less very sporadically probably compared to normal training sessions”