Flat abs workout

cinching sit-upCinching Sit-ups

Lie face-up, arms overhead on ground. Engage abs as you sit up, bending knees and twisting torso to right as you extend arms past knees (as shown). Return to start. Repeat on opposite side for 1 rep. Do 20 reps. Target: transversus and rectus abdominis, obliques

Side Slim Downside slim down

Kneel on right knee with arms overhead and leaning toward left, left leg extended out to side, foot on ground (as shown). Shift to right, placing right hand on ground to support upper body, as you raise left leg level with hip, foot flexed. Return to start. Do 15 reps. Switch sides; repeat. Target: obliques

beggars plankBeggars Plank

Start in plank position on forearms, palms down, feet together. Flip right palm up as you move right forearm forward a few inches; repeat on left (as shown). Reverse movement: Move left forearm back as you flip palm down; repeat on right to return to start for 1 rep. Do 15 reps. Target: transversus and rectus abdominis, obliques

Reference: SELF