He was this crazy fitness guru who used to have an exercise TV show when I was a kid. He was the first person I ever saw in a jump suit (belted-) and he would work out with his white Alsatian, Happy, looking on approvingly. He flogged a line of diet and exercise products, including the 'Glamour Stretcher' a kind of giant rubber band, and was also given to bursting into sentimental song, and/or reciting his own devotional poetry at times.
He did stunts like swimming the channel, etc., well into his 80's, and has just passed at 96. Good for him.