Hydrotherapy - Heat dilates blood vessels, which in turn lowers blood pressure. It increases the flow of blood, oxygen and nutrients and speeds the elimination of toxins. All ingredients to quiet mind and deeper relaxation.
The Arthritis Foundation touts hot-tubbing restores range of motion. Temporary relief of chronic pain. Sitting in a hot-tub dresses the central nervous system. The system that signal the brain that you're hurt.
Chronic pain is also a source for anxiety and depression. By suppressing chronic pain, you also alleviate your depression.
Better Sleep; the National Sleep Foundation recommends taking a dip a couple hours before bedtime. Your cooling body helps you drift off to a better, deeper sleep.
The New England Journal of Medicine suggests soaking for 30 minutes can lower blood sugar levels in people with type 2 diabetes.
Hot Tubs are great for family entertainment. Parents can receive all the health benefits of a hot tub, while playing with their kids together in a small area face to face. Something you can't safely do in a car.
togetherness, while relaxing promotes open communication.
If you are a bachelor, you understand. Enough said.
Status, for years Hot-Tubs have been an icon for "we're doing OK", every lifestyles show has to show the hot-tub. Is that a reason to buy a spa - surveys show "Status" a close 2nd to "Health Benefits" in post purchase reports.
Personally, I told my wife that our new Spa would create more time together, our health would improve, stress would melt away and we would get better nights sleep. Then again, I love watching my neighbors - the Jones' - sitting on lawn chairs with their feet in their kiddie pool giving us the evil eye.