Jack LaLanne
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Francois Henri "Jack" LaLanne (pronounced /lə'leɪn/ "luh-layn" French /lalan/ "lah-lahn"; September 26, 1914 – January 23, 2011) was an American fitness, exercise, and nutrition expert and motivational speaker who is sometimes referred to as the "Godfather of Fitness" and the "First Fitness Superhero". He described himself as being a "sugarholic" and a "junk food junkie" until he was age 15. He also had behavioral problems, but "turned his life around" after listening to a public lecture about the benefits of good nutrition by health food pioneer Paul Bragg. During his career, he came to believe that the country's overall health depended on the health of its population, and referred to physical culture and nutrition as "the salvation of America".

Decades before health and fitness began being promoted by celebrities like Jane Fonda and Richard Simmons, LaLanne was already widely recognized for publicly preaching the health benefits of regular exercise and a good diet. He published numerous books on fitness and hosted the fitness television program The Jack LaLanne Show between 1953 and 1985. As early as 1936, at age 21, he opened one of the nation's first fitness gyms in Oakland, California, which became a prototype for dozens of similar gyms bearing his name. One of his 1950s television exercise programs was aimed toward women, whom he also encouraged to join his health clubs. He invented a number of exercise machines, including the pulley and leg extension devices and the Smith machine. Besides producing his own series of videos, he coached the elderly and disabled not to forgo exercise, believing it would enable them to enhance their strength.