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.