Lat pull-downs behind the neck
The lat pull-down machine allows you to build arm, torso, and back strength by pulling a weighted bar down in front of your chest. But when you switch to pulling the bar behind your neck, your alignment is off and the shoulder is impinged, says Aguilar. Prevent debilitating shoulder injuries – or any injuries really – by stretching.
Originally published as 7 Common Exercise Moves That Actually Work Against You on ReadersDigest.com.