Lay down on the floor and press your lower back against it.Stand up straight and put both arms behind your head.Get your abs tight and bring your belly up toward your spine.Raise your shoulder blades off the ground and slowly bring your knees straight down to the floor.
Now, keep your knees bent and slowly move your legs back and forth in the air like you're riding a bike. Do 20 reps twice.During this ab crunch, don't keep your fingers together behind your head. This could hurt your neck.
LONG ARM CRUNCH
Lay on the floor with your back against it and get into the tabletop position. Hold your arms out behind your head with the hands facing up.Pull in your abs to slowly lift your arms off the floor and up toward the sky. Make sure your arms are close to your ears.
SIDE CRUNCH
Lay on the floor with your back against it and get into the tabletop position.So that your right leg is on the floor, turn your hips to the right. Stand with your back straight. Now put your right hand on your right knee and your left hand behind your head.
OBLIQUE CRUNCH
Lay on the floor with your back against it and get into the tabletop position.Stand up straight and put your hands behind your head.Pull your abs in to lift your shoulder blades off the ground, then slowly turn your body to the right.
REVERSE CRUNCH
Lay on the floor with your back against it and get into the tabletop position. Put your arms out and your hands behind your head.While keeping your lower back on the floor, tighten your abs to lift your hips.