Dehydration, Exercise & Appetite

Dehydration, Exercise & Appetite Exercise can influence appetite hormones, often decreasing your desire to eat for a while. A study published in the journal Medicine and Science in Sports and Exercise examined the role hydration plays in this phenomenon.

Ten active male subjects exercised when adequately hydrated and then when slightly dehydrated. Both trials involved fasting before running on a treadmill for 45 minutes at 70% of maximum capacity. Compared to a third trial where no exercise took place, these volunteers consumed significantly fewer calories at breakfast when they exercised first.

True Strength Moment: The lowest levels of the hunger hormone ghrelin were detected after dehydrated exercise. Ghrelin was also suppressed after hydrated exercise, but not by as much. Still, these subjects ate about the same amount after exercising regardless of hydration status. The fact that just 2% dehydration can hurt your performance is reason enough to keep sipping liquids before, during and after your training.
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