“If you had one exercise to do... this one is it! This move incorporates joint stability and core strengthening, and strengthens, tones, and trains the body to move through every angle—the way the body was meant to move," says Jay Cardiello, SHAPE fitness editor-at-large and founder of the JCORE Accelerated Body Transformation System.
How to do it: Start on all fours. In one swift movement, swing your left leg under your hips and extend it fully to the ceiling. Upon driving your left leg under your hip, simultaneously reach your right hand towards the ceiling and have the left foot and right hand meet at their highest points. Retract back to your original starting position and repeat on the other side. Do as many reps as you can for 30 seconds and then take a brief rest. Repeat 1-3 sets total.