This is the beginning of a potential series profiling the types of people you find at the gym.
First is the incredibly large guy in the tank top and pseudo-stylish hat who wears sunglasses even in the winter, indoors, at night. He waxes every inch of exposed skin and probably goes tanning almost every day. He is at the gym every time you go there, but the strange thing is, he never works out. Rather, he slowly swaggers around the gym, staring at women and men alike, and occasionally engages in shallow 2-minute conversations with similar types. Sometimes he will sit on the piece of equipment you need to use next, for 10 minutes, just kinda hanging out.
Since he never actually does anything, there are only three possible explanations for how he managed to get watermelons for biceps:
2) Alien technology.
In any case, he is only at the gym to hide his terrible secret. He should be avoided because he probably eats babies.