Fitness

Fitness may refer to:


 * Physical fitness, a state of health and well-being of the body
 * Fitness culture, a sociocultural phenomenon surrounding exercise and physical fitness
 * Fitness (biology), an individual's ability to propagate its genes
 * Fitness (cereal), a brand of breakfast cereals and granola bars
 * Fitness (magazine), a women's magazine, focusing on health and exercise
 * Fitness and figure competition, a form of physique training, related to bodybuilding
 * Fitness approximation, a method of function optimization evolutionary computation or artificial evolution methodologies
 * Fitness function, a particular type of objective function in mathematics and computer science
 * "Fitness", a 2018 song by Lizzo