Hydration affects testosterone and cortisol responses to exercise
October 28th, 2006 | by David Spelts |Collegiate runners completed a series of runs at different intensities and at different hydration states. When slightly dehydrated, they experienced higher cortisol levels and a reduced testosterone to cortisol ratio, both before and after aerobic exercise.
Dehydration is a stressor and will prompt a stress response (cortisol release). The reduced testosterone to cortisol ratio increases catabolism and will hinder progress, both in performance and body composition.
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