Flatten your belly, slim your thighs, and firm your butt in 2 weeks-- without a single sit-up or squat. These five ballet-inspired moves use one piece of equipment--a wall--to gently increase your flexibility and range of motion.
Walk for 3 minutes at run at for 90 seconds; then sprint at for 30 seconds -- repeat until you have completed 30 minutes (should be close to 4 miles!) -- then jog for 3 minutes to cool-down. --From marathoner Kara Goucher!