No doubt hot tubs are relaxing and romantic for most, but sometimes they're an important part of physical rehabilitation or low-impact exercise. Many of today's tubs come in a longer, lap-pool shape and operate as a kind of swimming treadmill for doing laps in place. If the shape is long or wide enough -- whether circular, irregular or rectangular -- a hot tub is great for physical therapy because it provides resistance for building or maintaining muscle strength and some jet pulsation to aid circulation and prevent or relieve tight muscles.
There also are two types of spas to consider: either in-ground or above-ground. Many above-ground units are self-contained. They include all of the pumps and connections needed to get up and running. Many in-ground and some above-ground models come without built-in components and can be customized for the user with separate parts. A reputable dealer can help you sort out the options and costs and help in deciding what will work best in your yard.