Exercises from the community
Bicycles (abs)
Bicycles on a hanging bar work endurance and hypertrophy for the abs through a longer range of motion than the floor version, recruiting the obliques as a synergist throughout. Hang from a pull-up bar with your arms fully extended and core braced. Drive one knee up and across toward the opposite side while extending the other leg, then alternate in a smooth pedaling motion, keeping your torso as still as possible.
Raise Big Toes
With raised arches, lift only both big toes, keeping the other four on the ground, then lower them back down. Repeat this slowly 5-10 times. This exercise and the next one require a gradual re-learning of lost muscle control. When you first try, you might not be able to move certain toes independently. Keeping your spine straight and long, you can bend your knees and bend down forward to use your fingers to help hold the other toes down while you are learning the new muscle control.
Seated Knee Raises (abs)
Seated Knee Raises strongly target the lower abs with a compact range of motion, making them an efficient tool for building a six-pack. Sit on the edge of a bench or chair and lean back slightly, holding the edge for support. Draw your knees up toward your chest using your lower abs, then extend your legs back out without letting your feet touch the floor between reps.