Why do you immediately feel good when you get into a hot tub?
For a start, you instantly lose 90% of your body weight, reducing the load on your heart by 10-20%. And, because the temperature is sustained at around 38°C, the feeling of well-being that you experience is accompanied by changes in your circulatory system that have a beneficial effect on many aspects of your body. When this is combined with the therapeutic affect of the spa's massage jets, which further relax the muscles, and promote healing, the result is sheer bliss!
What happens to your body in the hot tub?
The body's first reaction to being immersed in hot water is to try to get back to its normal temperature by working the heart harder to pump the blood to the surface where it hopes to be cooled. This causes a temporary increase in blood pressure. Of course, because the water is hot the blood is warmed not cooled. The result is that the core body temperature rises and, after a short while, the warm blood causes the blood vessels to dilate which lessens the resistance to blood flow and reduces blood pressure. The body begins to perspire, expelling toxins and the muscles relax, temporarily relieving aches and pains.
What are some therapeudic benefits?
It is widely recognised that a benefit of warm water and soothing massage is to relieve anxiety and relax tense muscles. It has also been shown that 20 minutes in a hot tub also helps relieve high blood pressure, headaches and chronic pain due to stress.
Muscular relaxation occurs when warm blood reaches deep into the muscles. This relaxation effect helps to deaden muscle pain by easing any pinching of nerves or blood vessels and by helping the muscle rid itself of lactic acid and other metabolic wastes.
It has been found that sleep deepens as the body temperature falls. As a result some medical experts recommend that anyone wanting to induce sleep - especially those being kept awake by pain - soak in water at approximately 39°C about two hours before bedtime.
So combined with the fact that a soak in a tub alleviates body tension and provides a natural remedy (unlike drugs and alcohol which make you feel groggy and have other adverse side effects) you can't fail to have a good nights sleep.
A known benefit of hot water and massage is that it eases pain, fatigue and soreness due to exercising. It also relaxes muscles and stimulates the release of endorphins, the body’s natural pain killers.
A further benefit of the hot tub's jet action is to promote healing by providing even more oxygen to the blood than is provided by warm water alone. The heat and pressure from the jets can also raise the level of antibodies and white blood cells, promoting the destruction of toxins and stimulating the formation of new tissue.
A benefit of the buoyancy of hot tub water if that it reduces body weight by approximately 90%, relieving pressure on joints and muscles and making it easier to perform exercises. Heat warms up joints and decreases swelling. Then, as the body registers temperature change, the central nervous system becomes depressed, contributing to muscle relaxation and temporarily relieving chronic pain.
Regular use of hot tubs helps to keep joints moving. It restores and preserves strength & flexibility, helps restore the full range of motion and also protects your joints from further damage.
Hot tubs are proven to provide benefit to people suffering from Type 2 Diabetes by reducing blood sugar levels1, improving sleep patterns and boosting an individual's general sense of well-being. Also, by relaxing the muscles, hot water helps increase an individual's range of motion and is especially helpful to patients who find it hard to exercise on land. An independent study2 of Type 2 diabetes patients, who were required to soak in a hot tub for thirty minutes a day six days a week for three weeks, showed that the patients' blood sugar levels were reduced by an average of 13 percent.
And finally, if you're still not convinced, possibly the greatest benefit of all hot tubs is that they provide an ideal place to relax with your friends and family. You will soon find that your children think the whole hot tub experience is as cool as you do and you'll be amazed at how the conversation magically flows.
Then, you'll find yourself becoming incredibly popular as your friends queue up to share a cool drink and have a fun dip in your hot tub too!