10. Spandex tight short shorts on a not-so-tight body
9. Dripping sweat stains on the machine you are about to use
8. Plumber's crack
7. Two meatheads coming out of a foggy sauna when the sauna is turned off
6. A big musclehead breathing and moaning really loud as he stares at you when he does his reps
5. A very happy and excited muscle man staring at you intently doing dead lifts or butt blaster
4. The same guy asking to join in your workout
3. Sweat-soaked towel left on top of the free weight you wanted to grab
2. Pungent perfume or cologne smell mixed with sweat
1. Yellowish water in the pool