strict rules for BP

 maybe you worry about BP, maybe not.
I do, every few months.
Today I opened up a new package of cheese, ate it, and later felt funny, like I was nervous or something.
So I measured it.
My arm must be bare, the cuff 1/2 inch above my elbow, and I like to plug it in (me plugging stuff in is a chore anyway)

The hose has to be aligned exactly with the palm of my hand,

and my arm (most of it) should be resting on a table.
The cuff needs to be installed carefully with one hand, being careful (after many tries) not to knock it out of alignment.
All those mini-chores surely rose the pressure, and the meter wasn't working as well as it should: It kept erroring out.
OK patiently (sort of) reinstalling the cuff,
*eventually* the meter and I agreed that my pressure was high.
Not too high.
Was it all the rules I was following, or is it the cheese, or ???
OMG, (bp going up)

I'll take some heart pill (It's related, according to google, kind of)
And check again tomorrow.