6 Workout Mistakes that Slow Down Results

You huff and puff through cardio sessions, but that extra layer of flab just won’t budge. Surprise: Your workout might be to blame. We talked to trainers and exercise physiologists across the country and discovered six surprising ways that well-intentioned fitness routines can put the brakes on weight-loss goals.

“Many women assume that 30 minutes of exercise will change their bodies, but it’s not automatic,” says Geralyn Coopersmith, the senior national manager of Equinox Fitness Training Research in New York City. “If you’re focused and smart about how you use that half hour, you will be amazed by your results.” Here is what to do—and not to do—to rev your metabolism and slim down for good.

Don’t: Sacrifice good form for speed

Do: Slow down and stand tall

The results: Burn 50 extra calories per session