Targets: rectus abdominus (“six-pack”)
Lie on the back and put the soles of your feet as close to your body as possible, with your knees bent out to sides. Put your hands behind your head, elbows in line with your ears. Keep the back flat on the floor and with the stomach muscles contracted, exhale and curl your chest up a few inches off the floor toward your legs. Lower to start. Repeat this 10 times.
Side to side
Targets: obliques (sides)
Lie on the back and bend your knees and feet flat on the floor, and your arms at your sides. Exhale and contract your abs as you slide the right hand toward the right foot. Keep your head and neck aligned with your lower back pressed to the floor. Go back to the starting position, then change sides. Repeat 15 times.
Targets: transverse abdominals
Start on your hands and knees. Keep your back and ab muscles contracted and drop down to your forearms while extending legs out behind you so you are resting on the balls of your feet. Keep your back straight, hips up, and neck relaxed. Stay in this position for 3 seconds, then go back to the start. Repeat 10 times.
Fingers to Toes
Targets: rectus abdominus
Lie on your back with your legs straight and extended toward the ceiling, with arms down by your sides. Breathe out and contract your abs as you crunch up from your waist and extend your hands toward your toes. Keep your back flat on the floor. Do 2 sets of 15 repetitions.