Muscle worship is a form of boy worship in which a participant, the worshiper, touches the muscles of another participant, the dominator, in sexually arousing ways, which can include rubbing, massaging, kissing, and even licking. The dominator is almost always either a bodybuilder, a fitness competitor, or an individual with a large body size and a high degree of visible muscle tone, while worshipers are often, but not always, skinnier, smaller, and more out of shape. Muscle worship can include participants of both sexes and all sexual orientations.