To be sure you aren’t doing more harm than good  during your workout, avoid these common exercise don’ts.

Practicing Poor Form
If you compromise the way you do a move, you not only  decrease the benefits, you also increase your chance of getting hurt. Check with a trainer to make sure you follow the correct form.

Repeating Routines
Your muscles love being  challenged, so mix it up. If you just stick with a few moves you know, muscles eventually adapt and won’t need to work as hard to do the same exercises.

Daydreaming
It’s so easy to let your mind wander to work or the kids while you’re lifting weights. But studies show that more muscle fibers are used when you completely focus on each rep. So try to stay totally in the moment.