 Fitness guru Richard Simmons died of natural causes at his home in Los Angeles on Saturday, a day after his 76th birthday, according to his publicist. As a teen, Richard Simmons weighed 268 pounds. He lost the weight and turns his success and his infectious personality into a mini empire. He led the sweat into the oldies exercise videos, created the deal-a-meal diet plan, wrote best-selling books, and hosted the Emmy-winning daytime talk show, The Richard Simmons Show.