clipped from www.nytimes.com

Studies have shown that listening to music during exercise can improve results, both in terms of being a motivator (people exercise longer and more vigorously to music) and as a distraction from negatives like fatigue. But are certain songs more effective than others?

the best workout songs have both a high B.P.M. count and a rhythm to which you can coordinate your movements. This would seem to eliminate any music with abrupt changes in time signature, like free-form jazz or hard-core punk, as well as music that varies widely in intensity, like much of indie rock.

“The vast majority of bodybuilders are fans of heavy metal, if not in their personal life at least in the gym,” said Shawn Perine, a senior writer at Flex magazine. Loud, aggressive music, he said, “keeps you elevated, especially in between sets.”

But is there a perfect workout track, a song that transcends exercise forms and personal preferences? One comes up repeatedly: “Gonna Fly Now,” the theme from “Rocky.”