And if you run or cycle outdoors and for a long distance, then know that more water and more carb gels or energy drinks is not magically going to make you faster. Energy drinks can get very dense in glucose, and since limited glucose is emptied from the stomach in a short period of time, this (a high concentration of glucose) will retard gastric emptying, leading to less absorption of glucose in the blood, and therefore quicker fatigue. So go slow on energy drinks and stay well hydrated but practise drinking water at every training session, not just on the long runs or race day.
Cycle energy
