Before Jaws made us afraid of the water, Hollywood made it the hottest place on Earth — filled with tans, tunes, and teenagers who never stopped dancing. From the late ’50s to the late ’60s, ...

Sammy Davis Jr., an American actor, dancer, and singer, uses the "Jiffy-Gym," an elastic chest expander, in June 1968. Davis was not only a popular performer of the '60s, he was active in the civil ...