While we’re always in favor of complete and balanced meals, protein shakes can be a great way to make sure you meet your body’s muscle-building needs. But we’ve heard from countless guys that instead of kneeling at the cable machine, they end up kneeling over the toilet. The (literally) painful irony is clear: Sometimes, protein-fueled efforts at good health make people feel awful. Here’s what might be going wrong.
Guzzling down a half-gallon of whey makes some guys feel like they wanna puke. Here's why.