Richard Simmons left the public spotlight more than eight years ago, and he’s thanking fans for their support. On Wednesday, the fitness guru took to his Facebook page and shared a photo of a smiling emoji holding a thank you sign.The post came after FOX aired "TMZ Investigates: What Really Happened to Richard Simmons" on Monday night.The special explored his rise to stardom and surprising departure from the public eye. It featured interviews with Denise Austin and Suzanne Somers, as well as pal Bruce Vilanch and Simmons’ longtime costume designer Leslie Wilshire.