Much like how black asphalt give off the most heat around evening time on a hot summers day, our bodies start give off much heat once the warm summer months have started to subside. This may manifest as a cold, or the flu, as well as aggravation of symptoms of inflammation such as arthritis. This is why the changing of the seasons from summer to fall is a great time do a de-tox. The body is naturally trying to slough off the excess heat that it may have absorbed during the hot summer months. Ways to cool down excess heat in the body include cooling practices such as Shitali or Shitkari pranayama, ingesting aloe vera juice, and avoiding hot and spicy foods. De-tox kits can be found in the health section of natural food stores.