If you have a floor-length mirror, do your push-ups in front of it. As you do the push-ups, look into the mirror to check that your body is straigh...

If 3 sets of 15 becomes too easy, try some variations to continue building strength. More than 3 sets of 15 may start to add wear and tear to your...

Try doing push-ups with your knees on the ground rather than planting your feet.