If you're a fitness fanatic like Health's editors are, then you probably have at least one pet peeve-something your fellow gym bunnies or trail mates do that drives you bananas.

In a recent article in The New York Times, Jen A. Miller lamented the use of smartphones in races, noting that the devices have become "social media spouts for runners to take selfies, FaceTime a family member on a crowded course, or chat on the phone in the middle of a race, oblivious to the people behind and around them." She pointed out that in her 10-year career as a runner, there have always been racers who did inconsiderate things. "But with the advent of smartphones, such incidents have blossomed."

"Guys in hot yoga class who leave big puddles on the floor and don't bother to wipe them up when they leave. There are few things grosser than stepping barefoot into a pool of someone else's sweat."

"My big pet peeve? Runners who don't practice spitting etiquette. I get it, it's really annoying to have that phlegmy feeling in the back of your throat. But please watch before you hock a loogie to make sure there's no poor innocent jogger in the landing zone."

"It seems whenever I'm in the gym, someone stands right next to me. I've been in big empty rooms and someone starts working out on top of me. It drives me mad! To calm myself down I just tell myself they are right next to me because they see me as competition and want to keep up. But in reality I think they just don't have my personal space issues."