The usual form of footbath, which is commonly done in resorts or spas, is different from the detox foot spa machines sold in the market today. Footbath have originated from a Japanese legend occurred about 1,600 years ago. It was narrated by a group of sickly people and monks who made pilgrimage.
Sun is generating energy by nuclear fusion. And nuclear fusion will emit energy in the form of gamma rays. Normally earth's ozone filtering the Ultraviolet radiation. And magnetic fields of earth deflecting the cosmic rays(charged particles).
Ozone layer. Ozone-oxygen cycle in the ozone layer. The ozone layer or ozone shield is a region of Earth's stratosphere that absorbs most of the Sun's ultraviolet (UV) radiation. It contains high concentrations of ozone (O3) in relation to other parts of the atmosphere, although still small in relation to other gases in the stratosphere.