If you want to make the most of your time at the gym, leave your phone in the locker. Studies show that texting and talking on the phone reduces the intensity of your workout. Not only do you burn fewer calories when engrossed in your device, your balance is off too. Texting reduces stability by a staggering 45%, and chitchatting reduces stability by 19%.

Leave your smartphone in your gym bag—you’ll get a better workout, and you’re less likely to fall off the treadmill.