Similar to the "knees and toes" exercise,this rapid/fast skip hobble will tone your lower abs, tighten your core, and work your legs (especially the calves!) and booty.
Here's a rapid/fast tutorial on this rapid/fast skip motion - it's so similar to high knees,but you're springing off your standing foot to add an additional challenge.
Related:
Burn Calories, Up Your Heart Rate, or Tone Your Legs With 1 MoveBegin by standing with your feet hip-width apart.
originate a fist with both hands and bend the elbows to where your hands are approximately level with your chin.
Drive the right knee up,twist your torso to the right, and bring the knee to meet your left elbow.
Immediately repeat with the left knee meeting your right elbow, or accomplish this in a hopping motion while staying on the balls of your feet.
retain your abdominal muscles engaged as your knees come up,squeeze the side oblique muscles as you twist.
Source: popsugar.com