Anything high-energy and high-tempo works for me. I mainly listen to progressive metal, along with some rap from Too $hort. While I'm not really a fan, This Fire Burns by Killswitch Engage makes for some invigorating workout music.
Some other typical tracks I listen to:
James LaBrie - I Need You
Cloudkicker - Dysphoria
Meshuggah - Suffer in Truth
Some other typical tracks I listen to:
James LaBrie - I Need You
Cloudkicker - Dysphoria
Meshuggah - Suffer in Truth