How to do it: Lie faceup with legs extended at 90 degrees, arms overhead, hands clasped together.
Take a deep breath in, and as you exhale, pull your navel into your spine and lift your head and shoulders off the floor. As you crunch up, open your legs into a straddle position and ‘chop’ your arms through your legs.
Inhale and return back to your starting position. Do as many reps as you can in a row (with good form) for one minute.
Bonus burn: This move not only works your abdominal wall, but also helps target your inner thighs.