Get on the floor on your hands and knees and lift your abdominals as if your bellybutton is lifting toward your spine, while still maintaining neutral spine.

At the same time, extend your right arm and your left leg out straight from your body and hold them out about six inches off the floor

Hold the stretch for five to eight seconds, breathing comfortably and normally.

Lower your arm and leg and return to hands and knees on the floor.

Repeat the exercise six or seven more times on each side.