Per TMZ, Richard Simmons has died. The American fitness personality is known for his energetic exercise videos promoting weight loss, most prominently from his ‘Sweating Through the Oldies’ line of aerobic workouts. The public figure later went on to promote exercise through political activism, including the 2008 bill in support of mandating noncompetitive physical education in public schools as part of the No Child Left Behind Act. He was 76.