I'm not sure about any of you but I couldn't get in a good workout at the gym without listening to some amazing tunes. I find that this can motivate me like no other, even to GET to the gym. I hate working out my lower body (figures it's the one that needs the most work) - and these are the songs that make those squats fun (well kind of).
PS - I am 36 so by no means a youngen but I listen to all kinds of music that I download from iTunes. Hereis my playlist for my BUTT days!
Supermassive Black Hole - Muse
Decode - Paramore
Denial - Sugarbabes
Crazy - Jem
Hurts so Good - John Mellencamp
If you Seek Amy - Britney Spears
Spotlight - Mutemath
She Bop - Cyndi Lauper
Bad Girls - Donna Summer
Rock N Roll Queen - The Subways
Miss Murder - AFI
That Song - Big Wreck
Next 2 You - Buckcherry
Keeps Getting Better - Christina Aguilera