Reply sounds like could be 1 or 2 other things that may be being tested - that my offering my explanation could mean I fall foul of the site rules.
So instead I'd suggest:
If the doctors are running tests it is not unreasonable to ask for an explanation of what is being tested and why - sometimes this all gets a bit fuzzy because it's done so quick etc.
I figure that if I see someone about my health It's important that they understand - however equally as important that I understand - it being my health after all :-)
Have never had to do it when blood pressure is taken. This is so frustratingly difficult to explain. Don't quote me on this. Doctor applies downward pressure that you have to resist as best you can(?)
It takes repeated practice to override the bodys auto motor controls - frustration is your biggest enemy here so try to get yourself into a mellow state of mind before practicing for best chances of success.
As says, it helps to visualise the main muscles and imagine switching off your control of them one at a time. Deep breathing and timing the relaxing with the out breaths seems to work for many.
Patience and sometimes a tutor are your best chances of success I think.
I work with people and their bodies. My experience is that this is present with NT and ND who struggle to do this, I believe that this has to do with subconscious tension held in body related to posture and to some extent emotional correlates. I think of it as being a skill that can be taught and learned,
I am a type two 'rigid arm' positioner myself ~ which is most noticeable by others when I am walking, and most noticeable by myself when running ~ as I need to move my arms more than they ordinarily would. I also do the 'autistic-T-Rex' thing as some call it.
This is due it seems to autism essential being a perpetual state of freeze, fight or flight, with an increased level of coiled tension being held in the body to achieve the most functional requirement to survive ~ even though the perceived threat was indirectly perceived by us in our mother's womb on account high stress levels caused by accidents, bereavements and or just being autistic, or on account of being rather worried about bringing a child into the world of inhuman affairs, and all that.
