butterfly crunch: Donât let the sweet name fool you, this move works the abs quite thoroughly. Lie on your back with your knees open and the soles of your feet together (in a butterfly position). Lengthen your arms overhead so they are resting on the
Lie flat on the floor with your lower back pressed to the ground (pull down your abs to also target your deep abs). Put your hands behind your head. Bring in your knees toward your chest, and lift your shoulder blades off the ground. Straighten out
Bird dog - Start on all fours with hands directly under shoulders and knees directly under hips. Bring left knee and right elbow to meet under torso. Keep abs tight and hips still and straighten right arm and left leg. That’s 1 rep. Do then switch sides.
Reverse Crunch - lay on back with your knees bent. Place your hands on the floor beside you. Without momentum, use your lower abs to slowly curl the hips off the floor and into your chest. Slowly lower them back to the starting position.