equal parts orange juice and water, plus a pinch of salt.Drink 100-200ml of an isotonic solution every 10-15 minutes; a standard 750ml bottle containing an isotonic drink should see most people through 50-75 minutes of training. You can have solid food
. To avoid cramps during your race, test your fuelling plan during a training run.During any endurance exercise, follow these guidelines for fluid and energy replacement:Drink 150-400ml of fluid for every 15-20 minutes of running.Consume 30-60g