Richard Simmons Dead at 76

Richard Simmons, the iconic fitness guru, has passed away at 76 years old, his rep confirmed to Men's Journal . A cause of death was not immediately clear.

TMZ is reporting that "police and fire responded to a call from his housekeeper just before 10 a.m. Saturday and pronounced him dead at the scene. We're told no foul play is suspected at this time, and cops are looking into it as a natural death."

Simmons birthday was just yesterday, and he took to social media to thank fans for the support.

Simmons was known for his relentless positivity and eccentric personality. He got his start with the Beverley Hills gym Slimmons, and rose to fame through aerobic videos, media appearances, and consumer products. He retreated from the spotlight later in life