Lunge With a Core Rotation (Total Body Core Sculpt)
Step your right leg back three to four feet behind your left foot balancing on the ball of your foot with your right heel off of the ground. 1) Slowly lower your right knee towards the floor into a lunge and bicep curl the arms at the same time. 2) Holding the legs in place (isometric contraction) reach and extend the right arm forward and the left arm behind you squeezing your abs tight and rotating your torso to the left. 3) Bring the arms back in and rotate back to center. 4) Press back up to the top of the lunge squeezing your right quadriceps.
Repeat this 1,2,3,4 sequence for 15 reps on each leg.