1. Simple sit ups.

Find a chair, couch, or something else slightly elevated for your legs to rest on. Position yourself with your back on the floor thighs against the side of the couch with your knees bent, and calves resting on the top couch cushion.

Next you put your arms behind your head and bring your elbows to your knees in a sit up formation.

2. Ready for rotations.

In this position, you are sitting down with your knees bent in an upward position.

Then with your hands behind your neck you slowly begin to rotate your body touching your elbow to your opposite knee, rotating back to the center, then doing the same motion in the other direction.

Additionally, the closer you have your feet to your butt, the more you will feel it in your abdominal muscles.

3. Hug your knees.

In order to do this position, you will need to start by laying down on your back. Next you slowly bend your leg at the knee, reach out, grab your shins, and gradually bring it down to your chest.

It is important that you keep applying pressure until you feel a proper stretch, then lower your leg back onto the ground, and repeat this process with your other leg.