Corkscrew Pushups (via Men’s Health)
The benefit…
It works your quads, calves, and core in addition to all the upper-body muscles activated when you do a standard pushup.
How to do it…
Assume a pushup position, but walk your feet toward your hands until your knees are bent at a 90-degree angle, with your hips slightly higher than your head. Lower your left side close to the floor by rotating your body and bending your elbows. Pause, and then rise slightly and rotate your right side to the floor. Pause again, and push back up to the starting position. That’s 1 rep.
Modification: Reduce your range of motion. Do a mini-pushup instead of a full one.
Wow this is amazing and really new to me! Definitely trying this.