Yes, I believe the good Dr. was telling you the truth.
Contortionists have this genetic thing, which is why they can get their bodies in those small once foot cube boxes! I think LIFE had an artice about it, about gymnasts, circus people, etc., that's why when you spoke of this, I did remember something about it.
But next time you watch the sport, watch the gymnasts on the side lines. They can never stand still.
Sharing a few more pennies,