how does michael phelps or other athletes train 6 hours a day do they take anything one time i trained boxing for 3 hours and felt cortisol?

2017-04-01 2:57 am
how do they do it i felt angry when my cortisol was high how do they do it

回答 (1)

2017-04-01 3:19 am
✔ 最佳答案
What is cortisol?


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