Think a cut chest, carved arms, and defined abs all day every day are out of reach? It’s not easy—but it is attainable. Your ability to burn body fat is partially determined by genetics, so it’s not enough to follow your favorite trainer’s every move. Everybody and every body is different, so we tapped 11 real guys whose livelihood relies on keeping their body fat down. They’ve revealed exactly what’s behind their diet, workout, and lifestyle that let’s them walk around shredded day after day, year after year.