I just finished doing a study about fitness tracker watches, and part of that study was to take my blood pressure, twice in the morning, and twice at night, 1 minute apart.
They sent me an Omron blood pressure cuff to use for the study.
The study requirement for taking blood pressure properly was pretty interesting.
First, I had to sit quietly for 5 minutes after putting the BP cuff on, feet on the floor and sitting upright in a chair with my arm resting on a desk or table. After 5 minutes, I took the first reading, then waited another minute (the device counted down the time so it was exact).
Before I took the BP reading, nothing with caffeine for an hour, no exercising.
Even so, my blood pressure varied from one day to another. Some mornings it was as low as 110/65, and other mornings as high as 150/80, and anywhere in between. Usually, it was lower in the evenings, but that is probably because our blood sugar and blood pressure start to rise first thing in the mornings, maybe.
Anyway, it helps to be consistent when you take the readings, so you know it is not because of something you just did or something you ate or drank.
