Motivational pop and rock music is the key to strength training success. Really. A 2006 U.K. study says so.

A York St. John University study found that students could hold a 2.4-pound weight straight out in front of their bodies at shoulder height for up to 10 percent longer when strong lyrics were booming around them. All-music workouts beat out both a partial-music workout and a white noise workout but only when the tunes were powerful enough to pump up exercisers.

Pick a song you'd belt out recklessly in the shower or in your car and use it to power your next workout. Or borrow this Women's Health recommended playlist. Or this one, compliments of Divine Caroline. Or this one, offered by Fitness magazine.