Milk Is Good Tests at Loughborough University School Of Sport showed that milk keeps the body re-hydrated four times longer than either water, or Powerade. Milk is rich in sodium, potassium and other vital salts which are lost when sweating. The combination of sugar, fat and protien found in milk means it is removed from the body less slowley than other drinks. During exercise tests, milk rehydrated the exercisers for four hours, whereas, water and Powerade only lasted for one hour. Milk offers athletes the cheap alternative to energy drinks, with low fat versions available to keep down calorie in-take. Milk is an excellent drink for anyone who is serious about their health and well being.