Want to know why you should work out with music? The Wall Street Journal has some persuasive answers: when athletes synchronize their movements to a musical beat, their bodies can handle more exertion: Treadmill walkers have been shown to have greater stamina and cyclists require less oxygen uptake. Swimmers who listened to music during races finished faster than others who didn’t. What music does it best? The journal puts that question to Costas Karageorghis, deputy head of research at the School of Sport and Education at London’s Brunel University, who reports that the “sweet spot” for workout music is between 125 and 140 beats per minute when people aren’t trying to time their movements to the music. That would mean that songs like the Black Eyed Peas “Boom Boom Pow” (131 beats per minute) and “Gangnam Style,” by Psy (132 beats per minute) are just about perfect. On the classical side, Karageorghis recommends Beethoven’s Symphony No. 3 in E-flat major, known as the “Eroica” symphony, and Mozart’s Symphony No. 40 in G minor. Read more in the Wall Street Journal.