Cardiorespiratory variability

Menstrual cycle length is associated with cardiorespiratory variability in humans.

“cycle length is strongly associated with how much cardiorespiratory metrics vary across the cycle”

Humansfemalesn = 2,596

The menstrual cycle through the lens of a wearable device: insights into physiology, sleep, and cycle variability

NPJ digital medicine·25 May 2026