Low blood pressure/ dizzy spells

I get this most of the time when I stand up. Combination of being tall and having low BP. I find it happens less if I am well-hydrated and am eating salts as well. It was really bad when I was in Mauritius but that was because I was in such high heat. I had some near faints a few times--fell back on the bed, vision blacked out, limbs started twitching. Thankfully that hasn't happened since.

Get up a little slower and hold onto something if you need to.