Bodybuilding is the use of progressive resistance exercise to control and develop one’s musculature. An individual who engages in this activity is referred to as a bodybuilder. In competitive amateur and professional bodybuilding, bodybuilders appear in lineups doing specified poses, and later perform individual posing routines, for a panel of judges who rank competitors based on criteria such as symmetry, muscularity, and conditioning. Bodybuilders prepare for competition through a combination of dehydration, fat loss, oils, and tanning (or tanning lotions) which make their muscular definition more distinct. Well-known bodybuilders include Charles Atlas, Steve Reeves, Reg Park, Arnold Schwarzenegger, and Lou Ferrigno. The winner of the annual Mr. Olympia contest is generally recognized the world’s top male bodybuilder. The title is now held by IFBB professional Phil Heath of the United States.