The Swiss ball challenges strength and stability by providing an unstable surface particularly requiring activation of the key stabilisers, the abdominal and back muscles. The Swiss ball also allows for core stability to be challenged in the sitting position, which functionally is very appropriate, as much of our work is performed whilst seated. The Swiss ball is also a great way of improving core stability whilst strengthening the upper and lower body with exercises such as push-ups and squats. The Swiss ball provides various positions that other equipment may not provide to facilitate correct activation of muscles that are otherwise lacking for the individual.