Setting in sitting on a stability ball (Core/pelvic floor strengthening isometric 50%, sitting on stability ball)

Sit up straight on a stability ball with your weight going through your seat bones.
Gently engage your pelvic floor, drawing your muscles upwards, and tighten your abdominal muscles, pulling them in towards your spine.
Hold this movement.
Remember to only tense these muscles at about 50-60% of what you could actually do.