That ancient wisdom...Almost 30 years ago, when my hair was first starting to recede, I visited a local practitioner of Traditional Chinese Medicine for advice. He sold me a tiny little wooden mallet with small needles embedded in it along with some topical herbs mixed into a very smelly liquid. He told me to tap my head daily with the mallet in the balding areas and then apply the medicine. I lasted one day and thought it was a ridiculous procedure that would never work.
Funny we're rediscovering this now with a more modern approach, using dermapens.