15-Minute Stairs Workout
(A) Sit on the edge of the second or third step with your arms at your sides. Pressing down on your palms, lift your buttocks a bit off the step. Extend your legs, resting your heels on the floor. (If you have back issues, keep your feet flat on the floor and bend your legs at 90 degrees.)
(B) Slowly lower your rear by bending your arms at 90 degrees. Press back up to the starting position. This is one rep; do 10. Now run up the stairs, then walk down. Do 10 more dips.