Flatter Abs in 2 Weeks 00:30 06:50 Beginner Moves Butterfly Crunch Targets: rectus abdominus ("six-pack") Lie on your back with the soles of your feet together as close to your body as possible, with knees bent out to sides. Place hands behind your head, elbows in line with ears. Keeping your back flat on floor and stomach muscles contracted, exhale and curl your chest up a few inches off the floor toward your legs. Lower to start. Repeat 10 times. Side to Side Targets: obliques (sides) Lie on your back, knees bent and feet flat on the floor, with your arms at your sides. Exhale and contract your abs as you slide your right hand toward your right foot. Your head and neck should remain aligned and your lower back pressed to the floor. Return to start, then switch sides. Repeat 15 times. Front Plank Ta...