One of the 3 main macronutrients, proteins are essential nutrients for the human body. Protein consumption has a strong correlation to muscle growth.

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Effect of protein intake on muscle recovery

"Protein shakes" and other high-protein dietary strategies are believed by some to improve muscle recovery times after workouts. However, there is some opinion to the contrary: that protein intake ...
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What's the difference between Whey Isolate and Whey Concentrate in shakes?

What's the difference? I'm looking at shake options and some contain whey isolate, some contain whey concentrate and some both.