Some of the songs on my exercise playlist on my iPod are
Fighter- Christina Aguilera
It's My Life - No Doubt
I Will Survive - Gloria Gaynor
The Best - Tina Turner
Crazy In Love - Beyonce
Survivor - Destiny's Child
Going Under - Evanescence
Let's Get It Started - Black Eyed Peas
Mr. Brightside - The Killers
Since You've Been Gone - Kelly Clarkson
Stronger - Britney Spears
Hollaback Girl- Gwen Stefani
These are some of the songs that keep me going. Hope you find some you like.