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.
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.
Toe Touches (abs)
Toe Touches use your body's own leverage against gravity as resistance, targeting the lower abs for a chiseled result. Lie on your back with legs raised straight up toward the ceiling. Curl your shoulders off the floor and reach both hands up toward your toes, then lower back down with control without letting your legs drift or your lower back arch.