Stair training works on the areas like calves, hamstrings, glutes, and quads. It targets hour lower core of the body, it improves the stamina of your cardiovascular system. Walking up and down the stairs for 20-30 minutes at a constant speed. Slowly increase the time limit from 30 minutes to 40 minutes and speed to a quicker rate. The exercise could work gradually and time taking to work on your body.