Wait, some proteins are better than others?
Yes, new studies are finding that some proteins are more beneficial to our bodies than other, especially in replenishing muscles. When we work out, muscle fibers are broken. Even though it sounds like a bad process, it's actually how we build new muscle. As muscle fibers break, they are repaired by motor proteins and the fixed muscle has more mass than it previously did. Protein supplements help with this process, and often reduce pain or soreness that accompanies breaking muscle fibers.

What foods are high sources of protein?

Typically, chicken, turkey, beef, pork, fish, eggs and dairy foods are high in protein, as are some nuts, seeds, beans and lentil. Eating foods high in these types of proteins will help muscle repair, and will fortify your muscles from the wear and tear of regular work outs.

Why do lifters supplement their diets with specific proteins?
Lifters often use supplements such as whey protein shakes to help their recovery and build muscle mass. Whey protein is the main ingredient of choice for these supplements because of its fast-acting nature. Within an hour of a workout, you are recommended to drink a protein shake, which will start acting on your torn muscle fiber soon after consumption.