There is a major fallacy that runs in the movement health field.
I call it the "Metric Switch" fallacy.
This fallacy takes place when someone claims they are having changes and results in one aspect of their life, while in reality, they’re having changes in another one.
Differently said, they claim they have changes in metric A, but in reality, they have changes in metric B.
Here's a precise example:
XYZ method claims to be able to change someone's gait, and then someone starts practicing this method. After having practiced the method for a while, that person starts feeling better. Then, because of that, that person will claim that their gait and posture changed.
Did you spot the fallacy here?
In case you haven’t, let’s look at this scenario carefully:
The initial claim was that the XYZ method was supposed to change gait and posture.
The changes that actually took place were “feeling better.”
Now, feeling better is great. But it isn’t the same as “changing your gait.”
Unless there is an actual measurement of before and after the gait, and unless there is a visual change demonstrated, one cannot claim that the XYZ method changed their gait.
Yes, you can say it makes you feel better. Cool.
But you cannot say it changed your gait. It simply hasn't.
In fact, the tool you're using to "measure" your gait is a camera. The tools you use to measure your feelings are your perception. These are two different things, and you have to be clear about that; otherwise, you're making shit up.
Now, this fallacy is everywhere in this industry. I would even wager that those coming up with their own methods and systems consciously exploit this fallacy to throw fancy claims at people to make them join their tribe.
I won't go into the details of what these claims are because there are too many. I'll leave this task to you.
But next time you see a method claiming certain changes, look to see if these changes are being showcased.
The specific changes that are claimed.
Not something else that has nothing to do with them.