Firstly, i would suggest it is a mistake to make the assumption that those who value science and the scientific method are against traditional training methodologies and models.
This certianly isnt the case for me. In fact i wrote an article on why 'evidence based' or 'research' is often not the best way to varify something.
https://www.martialbody.com/Blog-Research/Blog/ArticleID/63/Where-does-%E2%80%98The-Research%E2%80%99-fit-inOn the topic of internal arts, Im with Bao here.
I think there is an un-necissary focus on 'doing something' that could be called sinking the qi. In fact, the 'Qi' sinking is a consiquence of correct basic training, rather than a goal. That is why
the way the classics describe it is so important.
It is normally described as
something that 'happens' rather than
something you 'do'.One of my teachers would call this sort of thing 'chasing ghosts'. People would feel this or that, percieve this or that ... then constantly chase that same thing mistaking it for a goal. In fact that thing they are chasing is just a consiquence of correct practice, and ultimately being stuck on those sensations haults your progress.
An example from my own trianing, many years ago when i was seriously training Xing yi (maybe 3 - 4 hours of solid training a day, every day) i began to develop the feeling of heat inside my body. It was very strong, like my body was puffing up from a furnace inside. I was sure i was onto something and kept dwelling in this sensation as i trained. When i spoke to a teacher i trust about it they simply said 'Yeh, ignor that and keep training'. I did as i was advised and soon after the sensation subsided but my power generation levels jumped up. I was stuck on this thing that i thought was something special and it haulted my progress.
We shouldnt mistake descriptions of the consiquence of correct practice, for the practice itself. That is part of the reason I am not particularly interested in 'Qi' as a term or subject ... correct practice is correct practice ...