17. Alexander Rusev
Weight: 304 pounds
Rusev was born in Bulgaria and has trained in sumo and Muay Thai, helping him look like a tank and move with more agility than you'd expect. He trains with moves that mimic just what he needs to do in the ring — like grabbing a super heavy sand bag off the ground, lifting it high and throwing it back down to the ground.
Room for Improvement: "I like that his workout is sport specific — he's doing the same movement with a heavy sandbag he would do with a person," says Butterworth. "But he should take it to the next level. Scoop the sand bag up to one shoulder, move it to the other, run 50 feet, then throw it down. Maybe even do barrel rolls with the sand bag on the ground. This will help him adjust to anything that happens in the ring when that sand bag is replaced with a huge guy."