Are you craving for potatoes chips during or after a run? Welcome to the club. I made this episode after a 6hours mountain run in the heat and believe me the main focus of the day wasn't the view. How much fuid do we need? What type of fluid are the most useful for us runners and ultra addicts? The hydration index of average sports drinks is very disappointing (not to say inefficient) to deliver fluid in our bodies. What causes cramping and how to avoid it are also today's topics.  Hydration brings a better running performance and perhaps most importantly recovery!