When I tried out the fast-food dirty diet in the 1990s, I fit in my Frantz canvas suit like 15 pounds of sausage in a five-pound casing, and worse yet, my deadlift went down. Don’t make the mistake ’90s lifters (myself included) made — learn from it. Eat cleaner to lift better.

Performing best, and especially looking your best for the sport of bodybuilding, requires that your body be functioning well on the inside. Mark shares how he has accomplished this throughout his career.