A plunge pool is a small pool that is designed for quick dips or immersion in cold water. There are many synonyms used to describe a plunge pool, including soaking pool, cold pool, therapy pool, and relaxation pool. Some people also refer to them as splash pools, flash pools, or cool-down pools. The purpose of a plunge pool can vary, from providing a refreshing break from the heat, to aiding in injury recovery, or just for relaxation and enjoyment. Regardless of the name, a plunge pool offers a unique and invigorating experience for swimmers, and a perfect escape for those looking to cool off on a hot summer day.