If there is one thing I could change on my body it would be to have a JLO or Beyonce booty! I found a workout that kicks your butt in 20 minutes so if you don't have much time try this treadmill workout.
Recommended speed is 4 rpm, however you can adjust for your fitness level
Minutes /Incline
0:00-5:00 / 3-3.5
5:00-7:00 / 8-10
7:00-8:00 / 4-6
8:00-10:00 / 10
10:00-11:00 / 5-7
11:00-13:00 / 12
13:00-14:00 / 10
14:00-15:00 / 12
15:00-20:00 2-4