What exactly is ‘whey protein’ and why is it everywhere ? – Body and Soul

If you’re into your fitness or are on a health kick, you probably put a lot of emphasis on protein – after all, all the gym junkies and fad diets do, right?!
While you’ve been loading up on this muscle-building macronutrient, you might’ve noticed a special type of protein called whey protein popping up everywhere from protein shakes to fancy juice bars and even protein balls from the health food section of the supermarket.
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