Richard Simmons, the eccentric fitness guru known for his sunny demeanor and positive attitude, died on July 13 at his home in Los Angeles. He was 76.

His concept of fitness exploded in popularity in the 1980s, along with a nationwide fitness craze that included aerobics and Jazzercise. His videos became some of the most popular videos of the era. He also made regular TV appearances on talk shows. He also hosted his own talk and fitness show “The Richard Simmons Show,” from 1980 to 1984. The show won four Daytime Emmy Awards.