One of the biggest mistakes people make when lifting weights is skipping the pre-workout warm-up, says Instagram star and certified fitness trainer Massy “Mankofit” Arias. If you’re guilty of taking this shortcut, you might want to think that over: It takes a negligible amount of time to warm up the muscles, but doing so increases your mobility and reduces your risk of injury. And it actually feels pretty good.
So before you even think about lifting a single pound, get moving with the simple upper-body moves that Massy swears by. (Try each for up to 30 seconds or until your muscles feel warm.)