So, if you believe that a superstition like numerology is not a superstition, then it's not really a superstition anymore.
Doing yoga exercises makes more rational sense than that nonsense.
I’m not a fan of numerology, nor was Revelation advocating it, nor has the Bible ever endorsed it. Yet I can see numerology and Yoga(depending on what tradition and the aim of the practitioner) as having the same root, one of control of body and/or enviroment, feeding one’s illusions of personal godhood! Now that would seem irrational to me!