The SURGE The SURGE is a specialized training device that utilizes fluid to create a dynamic form of resistance. This forces the user to challenge both traditional exercises, as well as sport and activity specific movement patterns. As a result, this training apparatus provides a very unique challenge to the joints and stabilizing structures to resist and control the unpredictable nature of the shifting water within. The SURGE will improve: balance, stability and coordination fundamental muscular movement and neuromuscular capabilities postural control and movement efficiency. It will also help to reduce the risk of injury.