High5 EnergySource Protein Recovery is the ultimate drink for after exercise and is the choice of many Professional athletes. The whey isolate used in the drink is a high-quality source of protein. Protein contributes greatly to muscle growth and maintenance, so if you don’t want to ache the day after your race or exercise then having a Protein Recovery drink after exercise is vital. It also contains carbohydrate, due to the fact that your muscles are often low in glycogen (carbohydrate) after heavy exercise. For a slightly higher rate of protein you can mix the Protein Recovery powder with milk, and is also neutral, whereas some sports recovery drinks can be acidic. If you are used to mixing this with water, then mixing it with milk is a pleasant surprise.