Sure, I think it can motivate you to work out harder, if you use the correct music for you and the moment. I think it's just really motivating for some, while others may prefer silence because that's what they require in order to focus. I would listen to all sorts of music ranging from Various types of Metal, Funk, Old Rap, and even some electronica. Generally, I prefer something "hard" or "violent" with a nice rythm. I lift on the regular and I run so it helps to have some music like that when I'm trying to push myself or just get through a crappy day of working out. If you like Metal check this out... [youtube]http://www.youtube.com/watch?v=i1TxNbV0Qoc&feature=related[/youtube]