Bulls center Joakim Noah entered the league a beanpole. In his rookie and second years, he averaged 6.7 points and 6.6 rebounds. During the following three seasons, Noah packed on 5 to 6 pounds of lean muscle mass and improved his stats, eventually averaging 10.8 points and 10.4 rebounds per game.

Seeing this NBA Inside Stuff video with big wave surfer Laird Hamilton makes it look like a swim workout is one of the most intense cardiovascular challenges you’ll ever do. Hamilton and Noah jump in the pool with what appear to be 25 to 30-pound dumbbells. To end the clip, Hamilton instructs Noah that the next one is a no-breath exercise. Noah immediately pleads, “I need a breath, bruh.” Hamilton quickly rejects: “You don’t need one. It’s overrated.” Brutal.