Engelbert Humperdinck reveals the underwater pool workout and martial arts routine he credits with keeping him "alive" and performing at age 90.
https://www.foxnews.com/entertainment/man-without-love-singer-engelbert-humperdinck-credits-underwater-workout-keeping-him-alive-90
https://www.foxnews.com/entertainment/man-without-love-singer-engelbert-humperdinck-credits-underwater-workout-keeping-him-alive-90