The 80s fitness pioneer, Richard Simmons, starred in popular home workout videos |Del Far|CC BY 2.0

Fitness guru Richard Simmons, known for his unrelenting positivity, died on Saturday, a day after celebrating his 76th birthday.

The 1980s fitness pioneer starred in popular home workout videos, notably Sweatin’ to the Oldies. He won four daytime Emmys for Richard Simmons Show.

Another 1980s icon, Dr. Ruth Westheimer, a renowned sex therapist and talk show host who had candid discussions on sex and intimacy, died on Friday at 96.

Actor Shannen Doherty, who was part of Beverly Hills, 90210 and Charmed, died at 53. She was diagnosed with cancer nine years ago.