We live in a toxic world.  Toxins include heavy metals, PCB's, dioxins, plastics, and pesticides.  We are exposed to toxins by drinking tap water, eating food which is not organic, and eating fish high in mercury.  Symptoms of toxicity include fatigue, pain, allergies, "brain fog", and weight gain.  The first treatment of toxicity is removing the source of your exposure to toxins. The second treatment is removing toxins from the body.

Sweating is one way to drive toxins out of the skin.  Sweating drives toxic heavy metals and persistent organic pollutants out of the body.  Far infra-red saunas promote sweating.  Far infra-red saunas allow sweating at a more comfortable temperature than with other types of saunas. You can buy a far infra-red sauna for home use at a reasonable price, often well-under $2000 including shipping.