As the old saying goes: no pain no gain. And no group of people understand that concept better than athletes. These people are willing to put their minds and bodies through physical torture — all in the name of making those gains. Check out this gallery of photos that range from impressive to downright disturbing.
Slippery When Wet

Anthony Ervin's stunning tattoos are a sight to behold while he navigates the pool like a shark. He looks a little less... impressive... covered in all that shaving foam, but he's doing what he's gotta do to be a streamlined legend — and we respect him for that.