Natural bodybuilding is a bodybuilding movement with various competitions that take place for bodybuilders who do not use performance-enhancing drugs. This includes anabolic steroids, insulin, diuretics and human growth hormone. If a bodybuilder meets the requirements of the sanctioning body (the recognized group or authority that sanctions and validates competitions) that they are competing in, then they are considered to be "natural". There are numerous sanctioning bodies who provide their own rules and regulations that govern the competition procedures, event qualifications, banned substance lists, and drug testing methods.