After six weeks, add this move to your routine. Lie on your back with feet hip-width apart, knees bent. Inhale, then exhale as you draw your abs up and in toward your spine. Tilt your pelvis up, lifting your hips off the floor into a bridge. Slowly lower down to starting position.
Repeat 5 times, building up to 10.
Strengthens the transverse, buttocks and lower back.