We all have those go-to exercises we do almost every time we’re in the gym. They’re the moves we learned in high school gym class or saw in a magazine years ago and still rep out regularly without even thinking about it. But just because some exercises have stood the test of time, doesn’t mean they’re effective. We’ve asked six fitness experts to reveal the exercises they’d like to see die off. You might not like it, but calling it quits with these deadbeats might actually do you some good.