Weird symptom

So I wake up from a dead sleep seating and whole body trembling. Lasted probably an hour. Blood pressure was a little elevated 134/84. So not bad. But the trembling was so scary.

Yes, I can relate to this. There are times just as you have described, where I wake and have to sit on the side of my bed in a cold sweat and just try to regulate my breathing 'til I can recover from the anxiety attack. And yes, it is scary. It does eventually pass however. Feel better. 

I’ve had this. Lucky for me it didn’t last an hour. A couple of minutes was the worst I had it. But it would happen immediately upon waking up.

Thank you for the responses. It helps when people can relate