Exercises from the community
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.
Modified Side Jackknives (abs)
Modified Side Jackknives isolate the oblique abs for the kind of side cut that turns heads at the beach, with an easier setup than a full jackknife. Lie on your side with legs stacked and slightly bent, one hand supporting your head. Simultaneously lift your top knee and curl your upper body toward it, bringing your elbow and knee together, then lower back down with control before repeating on the other side.
Crossovers (abs)
Crossovers train the obliques hard by combining rotation with a crunching motion, hitting the sides of your abdominal wall more directly than a straight-ahead crunch. Lying on your back with knees bent, curl your shoulders up and rotate to bring one elbow toward the opposite knee while extending the other leg out. Alternate sides in a controlled rhythm, keeping your lower back pressed into the floor throughout.