RE: Why Cardio IS BULLSH*T - Pros and cons

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Why Cardio IS BULLSH*T - Pros and cons

in health •  7 years ago  (edited)

Cardio in addition to muscle training is okay. But doing too much cardio (more than 5 hours per week) does affect your thyroid and your metabolism becomes slower. That causes in reduction of muscle mass and increase of bodyfat.

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