No-Equipment Ab Exercises Chart - Bodyweight exercises always recruit more than one muscle group for each exercise so it is impossible to isolate and work one muscle group specifically by doing one type of exercise. It is however possible to increase the load targeting specific muscle groups with specific exercises so that they respond the most to the challenge. The following chart helps you find the exercise that helps focus more on specific abdominal muscle groups for best results.
Leg Lift - Sit with left leg extended in front of you, foot flexed, and right knee bent, foot on the ground. Wrap a resistance tube around left foot and place right foot on ends. Lean back, lowering onto forearms, and raise left leg until tube is taut. Point toes as you lift left leg until thighs are parallel. Flex foot as you lower to starting position. Do 30 reps; switch sides to complete set.