 The world remembering Richard Simmons after the weight loss and self-help guru died at 76. ABC's Chris Connolly says he was known for his relentless positivity and optimism. Richard Simmons was America's most popular and irrepressible fitness advocate, an energizer bunny of ceaseless encouragement. Richard Simmons' concern for the health of his public was very real. His advocacy on behalf of kids' self-esteem, even leading him to testify before Congress years ago.