Knee In-and-Out Crunch

Lying Bent-Knee Raise and Extend

Elevated Knee Tuck to V-Tuck

Standing Core Twist

Lying Leg Circle Hip Raise

Lying Bent-Leg Tuck

Sitting Air Twisting Crunch on a Padded Stool

Bodyweight Front Slam

Hollow Rock

Side-to-Side Knee Tuck