Far infrared sauna therapy (FIRT) works in many ways to help strengthen a weakened immune system. Firstly, the gentle warmth created from the heat of the far infrared saunas raises the internal body temperature which in turn mimics a type of artificial fever. This stimulates the body's immune system to turn on and get busy producing more of the different body defence cells that can be used to combat any foreign invaders. Secondly, far infrared sauna therapy stimulates full detoxification of the body. Detoxification can be defined as "the process of reducing the build-up of various poisonous substances in the body". Because the far infrared sauna wavelength penetrates the entire surface of the body up to two inches, a thorough cleansing can take place. The far infrared heat opens the pores to their base which helps mobilize the toxins which are then flushed out when you sweat. Every system in our body performs better when it functions in a detoxified state including the digestive system, endocrine system, cardiovascular system, lymphatic system and most importantly the Immune System. The United States Centre for Disease Control estimates that over 80% of all illnesses have environmental and lifestyle causes. Remember to drink lots of water throughout the day, especially before and after your far infrared sauna session to help with the detox flushing. A third and also very important aspect of immune system health that far infrared sauna therapy works with is creating Relaxation and Stress Relief. As we all know, stress either acute or chronic plays a major role in diminishing our immune system function as it causes chemical and hormonal imbalances to occur. The soothing heat generated from the far infrared sauna therapy creates total relaxation and decreased stress levels. Research has shown that continuous far infrared sauna therapy promotes a rebalancing of the body's hormones through its effect on the autonomic nervous system.