Pro: You're healthier! Con: Your "feel the burn" face looks just like your "my guts are full of spackle" face.

One day, maybe science will invent a jelly-filled donut that speeds up your metabolism and makes pounds of fat melt away. Until then, there is only one guaranteed way to lose your triple chin or cheese gut: burn more calories than you stuff into your greedy face. The best way to achieve this is by working out at the gym, a semi-public place where people try to avoid eye contact while grunting and secreting bodily fluids because, you know, we all want to look good in the buff.

From locker rooms full of sweaty people airing out their genitals, to He-men moaning in pain and/or pleasure, here are the dumbest things about hitting the gym.