Lie on your back, lift your legs towards the ceiling, flex your feet. Crunch up with your upper body and touch the outside of the right foot with your left hand, change sides and continue. Always stay under tension and do not lower your upper body down completely.
Exercises
Butterfly with Thera Band
Bring your resistance band under tension behind your shoulders. Arms are stretched to the sides. Bring your straight arms together in front of your chest.