
The Energy Equation What Women And Men Need To Know About Menstrual Cycles
Feb 17, 2026
Dr. Emily MacDonagh, a GP and menstrual health advocate and author, walks through why understanding menstrual cycles matters. She explains the four cycle phases, hormone waves, tracking benefits, and links between hormones, exercise and mood. The conversation covers PMS vs PMDD, contraceptives, endometriosis vs PCOS, nutrition, teen advice, and simple workplace support.
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Hormonal Peaks Drive Phases
- Hormones oscillate: estrogen rises in follicular phase and LH peaks to trigger ovulation.
- Progesterone rises in luteal phase to prepare the uterus, then both crash before menstruation.
Bring Cycle Data To Your GP
- If mood or other symptoms recur around the same cycle days, record them and show the pattern to your GP.
- Clear symptom logs speed diagnosis and help differentiate hormonal from other causes.
Hormones Affect Injury Risk
- Injury risk can vary with hormones; higher estrogen times may increase ligament laxity.
- Female athletes show different injury patterns than men, so individual caution matters.

