We all know proper hydration is key to your best performance, but how can you be sure you're getting enough water? Dr. John Berardi, PhD, CSCS of Precision Nutrition explains how how much water you really need. 

Watch other Nutrition videos here:

Part 1:  Essential Fats

Part 2: Proteins

Part 3: Allergies and Intolerances

To learn more about nutrition, sign up for a free course here: 

http://www.precisionnutrition.com/cmd.php?Clk=5198303