They call it a "plunge pool," but it's not exactly the right place to perform a cannonball.
Preferred in homes with small backyards due to their size and ease of maintenance, plunge pools prove that almost everyone can have a pool. Its shallow depth, usually 1.2 metres, is meant to be used only for simple wading or relaxation, not for cannonballs and the like. Their size also puts them between a full-fledged swimming pool and a spa.
Plunge pools may be customized to operate as spas, complete with water jets and climate control systems. Their small size enables the water to heat up and provide relaxation faster than a regular swimming pool, whilst accommodating more users than a typical spa. Water jets can also be good substitutes for resistance when swimming laps.
The most common use for plunge pools, however, is therapeutic in nature. Athletes get into a cold plunge after an intense regimen to reduce fatigue and hasten recovery, although scientists are still unsure why and how it happens. According to Nathan Versey of the Australian Institute of Sport in Canberra, a 5-to-15-minute dip at 10-15oC is most effective in hastening recovery.
Whether you're an athlete hard at work, or you fancy a pool that doesn't break the bank, plunge pools are the ideal choice.