I used to see this beefcake guy in the gym who was the spitting double of Mr. T. I mean freaking huuuugggge. Haven't seen him for a few months. Then today this extremely lean & ripped guy asks me if I'm finished on the squat rack. I kind of recognized him but couldn't place his face. A little later, this old guy who I talk to in the gym comes over to me and says "you know that guy you were talking to earlier? That's the huge guy who used to come in here, the one who looked like Mr. T. He lost 100lbs."
Turns out his doctor told him he had prediabetes and that if he didn't do something about it, he would have full blown diabetes in the space of 2 months. So from that point he just immediately cut out everything bad in his diet and engaged in a program of intense cardio. Now he looks like a cage fighter instead of a tank. Not an inch of fat on him. It just goes to show - you see these huge muscular guys in the gym sometimes and presume that they're fighting fit, but some of them are wrecks inside. Pretty sure a lot of them are destroying their bodies with too much protein as well.