4 Oblique Push-Up
Works: shoulders, chest, triceps, core, obliques Facing the chair, place your hands on the sides of the seat. Walk your feet backwards until you’re in a plank, forming a straight line from head to ankles to start. Keeping your elbows close to your sides, lower your chest down to the chair. Press away from the seat to return to plank, then draw your right knee to your right elbow. Return right foot to plank, then draw left knee to left elbow. That’s 1 rep. Do 10 reps.