You can get plenty of protein in your diet, but protein powder has other advantages: It's convenient and generally lower in calories than an entire "high protein" meal. Drinking a protein shake after every workout speeds muscle recovery and supplies your body with the amino acids needed for muscle growth. There are two widely used proteins: whey and casein. Whey is absorbed more quickly by the body, while casein is digested slowly-providing the body with a longer-lasting supply of muscle-building nutrients. That's why many researchers recommend taking a mixture of the two to help sustain the release of amino acids into the blood for as long as possible.
There are literally thousands of pills you could be taking at any one time. Here are the five most important ones.
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