Modified on: Mon, 24 Sep, 2018 at 1:02 PM
An increased breathing rate can be an indicator that ovulation took place.
Tenan, M.S., Brothers, R.M., Tweedell, A.J., Hackney, A.C., & Griffin, L. (2014). Changes in resting heart rate variability across the menstrual cycle. Psychophysiology, 51, 996-1004.
de Zambotti, Nicholas, Colrain, Trinder, & Baker. (2013). Autonomic regulation across phases of the menstrual cycle and sleep stages in women.
Little, B. C., & Zahn, T. P. (1974). Changes in mood and autonomic functioning during the menstrual cycle. Psychophys, 11(5): 579-590.
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