As if you didn’t know, LiveScience has the goods on it.

For all you gym rats, here is exactly what listening to music does for your workout, Karageorghis said. First, it reduces your perception of how hard you are working by about 10 percent during low-to-moderate intensity activity. (During high intensity activity, music doesn’t work as well because your brain starts screaming at you to pay attention to physiological stress signals).

Secondly, music can have a profound influence on mood, potentially elevating the positive aspects of mood, such as vigor, excitement and happiness, and reducing depression, tension, fatigue, anger and confusion.

Thirdly, music can be used to set your pace . . .