What to do: Put a rolled-up towel or an AbMat under your lower back. Put the soles of your feet together in a butterfly shape.
Hip Lifts
How to do it: Lie on your back and lift your legs up until they are perpendicular to your torso.
Flutter Kicks
How to do it: Lay on your back and lift your legs straight up until they are above your hips. Stick the bottom of your back to the floor.
Scissor Kicks
What to do: Lay on your back and squeeze your abs as if your belly button were going to fall to the floor. Raise your legs a little and keep your lower back the same.
V-sits
How to do it: Start by lying on your back with your legs straight in front of you. Bring your knees up and touch your heels as you sit up.
V-ups
How to do it: Lie down and put your arms above your head in a straight line. As you take a deep breath in, pull your belly button in toward your spine.
Leg Lifts
How to do it: Start by lying on the ground with your head facing the ceiling and your legs straight out in front of you.
Hold Hollow Body
Bend your knees and lie on your back. Raise your knees so that they are right over your hip bones. Then crunch up and lift your shoulders off the floor.
Hip Dips
For a side plank hold, prop yourself up on your right forearm. Then put your right hip on the ground.
Toe Touches
How to do it: Start by lying on your back with your legs facing up. Try to touch your toes as you crunch up.