Books intended for the masses of people especially for a given time have to be written in a language and terms that people can understand. And I think there are important metaphors stated or implied in a lot of important writing such as the Bible. For example Creation taking “seven days”. There might be something to that.
There’s definitely something to the Hindu chakras.
There are seven spiritual Chakras, which are spiritual / energy centers aligned with your spine, and it turns out there are seven different sympathetic nerve ganglia under the spinal cord that correlate to the seven spiritual Chakras so what I found fascinating wise what an ancient society might call a “spiritual center or Chakra” is in fact something that those people could never have understood. But function the same either way.