This works the back and on your balance skill, which is needed when your tummy begins to grow!
Get onto all fours. Keep your neck neutral with your face looking down at the floor. Extend the left leg behind you and your right arm in front of you. If you find it very difficult to balance, don't lift the arm. Raise both the arm and leg up simultaneously as you squeeze your back. Slowly lower.
Do 10 reps and then change sides, extending your right leg and left arm.
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