Dr. Robert Portman: Optimizing your energy systems

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Hosted by
Scott Warr

Dr. Robert Portman is and exercise scientist and coauthor of three books,

  1. Nutrient Timing
  2. The Performance Zone
  3. Hardwired for Fitness

and has authored hundreds of articles on how nutrition can improve fitness, health and athletic performance.

Dr. Portman teaches us that there are five macro-nutrients that an endurance athlete needs to know how to use: Water, Proteins, Carbohydrates, Fats, and electrolytes.  By knowing WHEN and HOW MUCH to use  the macro-nutrients,  we can raise our performance, avoid bonking and G.I. distress.

Once we understand how to utilize these macro-nutrients, there are micro-nutrients that can further tweak and enhance our performance.

Over the last 30 years, Dr. Portman has reshaped sports nutrition and the development of energy products with proven performance and recovery benefits, including: Endurox R4, Accelerade and now Body Glove SURGE, an energy shot for endurance athletes.

Unsure of how much hydration and nutrition to use on your next workout?  Check out The Portman Calculator: easily compute your hydration and nutrition needs for a workout or race.

Here are some other interesting articles that Dr. Portman has written:

Check out our new sponsor’s, “Race Course in Review” by Vasque Running Shoes

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1 comment
  • Is there an updated link for the Portman Calculator? I loved it for my races, but the link now goes to a construction website.

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