Pure
Whey Protein: The #1 source for obtaining the
essential amino acids needed for muscle development. Whey protein is very cost
effective and popular.
Whey
Blends: Blended with other proteins like casein,
egg, and possibly soy to create a "time release" or "sustained release" matrix.
This is ideal as whey proteins absorb rapidly and the other proteins absorb more
slowly.
Soy
& Egg Proteins: Soy and egg proteins have been
used by athletes for years. While whey is the most popular choice, these proteins
are suitable in any program.