Well: Athletic Performance and the Monthly Cycle

Menstruation, with its accompanying fluctuating levels of the female sex hormone estrogen, can have a considerable effect on how a woman's body responds to the demands of exercise and competition.

Source: http://feeds.nytimes.com/click.phdo?i=27a0663d5ae16860ba94dfb6e9526b2b

Womens Issues Health and Fitness Acne Acupuncture Aerobics Cardio Allergies