Richard Simmons was a television personality and fitness guru for several decades, teaching Americans about a healthy lifestyle. His sudden death is now the subject of an investigation.

It remains unclear if Richard Simmons' bathroom fall influenced his passing. But with the new investigation into the cause of his death, the mystery will soon be solved.

Fitness guru Richard Simmons’ cause of death is being ‘deferred pending further testing and investigation,’ according to police. ET caught up with friends and family of the late fitness guru ...