The Toe Tap exercise works your abs, obliques, and hip flexors. Do 2 sets of 10 reps.
Play Away the Pounds! Toe Tap: This move starts with your knees bent 90 degrees and then you alternate tapping the ground with each foot. You're gonna do 24 toe taps total. If you want to make it harder, move both feet at the same time or extend your legs out in between the repetitions.