Quackery is the promotion of unsubstantiated methods that lack a scientifically plausible rationale. ... Examples of quackery include magnet therapy, homeopathy, and vitamin megadoses.
When someone offers a product to run faster, another product to burn fat and build lean muscle tissue, and yet a third to win athletic events when the information about the product(s) is not based on established medical knowledge or scientific principles, it is quackery.