怎么用梯子fq
MYTH: It's "normal" for female athletes to lose their period, or stop menstruating.
REALITY: Amenorrhea due to working out is unhealthy.
Mary Jane De Souza, Ph.D., FACSM, and Nancy Williams, Sc.D., FACSM, both researchers and professors at Pennsylvania State University, have spent many years studying the Female Athlete Triad.