Body vibrations when falling asleep or waking?

I would definitely discuss the Temazepam with your physician as they may want you to gradually reduce the dosage rather than just stopping the drug cold turkey. You may also wish to discuss with your pharmacist on how this drug can effect one after so many years of being on it, they seem to know these medications and side effects etc. better than physicians. But the fact is, after so many years the body becomes dependent on benzo's therefore the reason to ease off over time if you decide to quit taking this medication.

Best to you and I hope sleep returns. It is frustrating for sure.

Unfortunately, my physician knows little about sleep medication, or insomnia. I'm in the process now of, hopefully, getting an appointment with a sleep psychologist. In 1973, I went to Dartmouth Medical Center where Dr. Hauri was one of only 8 doctors in the US who did sleep studies. He later was the head of the Sleep Medicine Center at Mayo. This new sleep doctor I hope to see attended Dartmouth Medical which is now a large facility. In 1973, It was just Dr. Hauri and an assistant. Hauri asked that my husband go with me to my appointment; he believed the spouse should understand what having insomnia entails. Then my husband left and I spent two nights in the lab and he also tested me for my ability to relax (not good). He sent me home with Dalmane and Elavil, two strong medications. Dr. Hauri was Dutch and had an accent. He phoned in the medication to the pharmacy but the pharmacy gave me Mellaril instead -- a drug for schitzophrenia! Thankfully, after taking one pill and calling Hauri because of the horrible effect on me, I didn't take a second pill. But I've been on meds since then.
Later, Hauri promoted cognitive behavior rather than drugs. He was truly a pioneer in the sleep industry.
I had an amazing internist (now retired) but he wanted nothing to do with sleeping pills and I always had to rely on a sleep center.
My sleeping pill prescriptions are filled by an NP who has never met me.
It's why I'm looking forward to meeting a bonafide sleep medicine neurologist with whom I can have a conversation about what goes on with me. I don't know how I can taper off a capsule.
Tonight, I'm going to try taking an OTC aid to see if that might help (I doubt it). I think I would need to go to a drug rehab center since I am addicted to benzos.
I definitely need help and hope i will be able to get an appointment with the neurologist soon.
Thanks again, for your help.

Usually, I have vivid dreams, but last night my dream dragged on and involved a story that was borderline sci-fi and a bit horror -like. I woke up when I dreamed that that danger affected me personally, and I was relieved it was only a dream. I was therefore already awake, but in my first seconds of consciousness, laying on my back, when - for the very first time in my life, I felt a gentle but very clear vibration in my upper torso and my upper arms. I observed it for some seconds semi-alarmed, semi-curious... I even began to wonder if maybe there was a distant earthquake that my body was picking up. I then forced myself to stretch, and that helped to stop the shaking. Immediately afterwards, I turned to Google to search for this unusual symptom, which led me to this page.... Apologies for my English, I am not a native speaker...

I have been having the vibrations for couple of years now. No bad side affects. I do notice that if I am startled wake they are much more intense so I figure adrenaline plays a role. You may be having some that are so faint you haven't even noticed them before. Mine were pretty intense and stressing me out until I realized mine were harmless. Once I relaxed and started to ignore them they are very mild now. Hope this helps.

does it increase on small physical effort, like turning around,stretching,
sitting up, moving arms or legs

For me they go away almost immediately if I wake up all the way. And yes then stretching and moving helps. This is great in the morning. But at night when I feel them when I am starting to fall to sleep if I wake myself up to get rid of them it means that I will have to try to fall asleep again and they will be back. So vicious cycle. That's why now when falling asleep and I feel them I do everything possible to remain calm. relaxed, ignore them and know they will be gone if I just go to sleep. Same thing if I wake up in the middle of the night...relax, go back to sleep. ( Of course in the beginning I got up terrified which only made them worse and couldn't get back to sleep very well.) We are all a little different in our experience but I hope this helps. I am in excellent healthy, no medications, and anything else to explain why it happens.

yes, falling asleep again is a problem.

But I noticed a vibration increase on activity first randomly and then did
several tests and it was confirmed, so I'm pretty sure.
I also experimented with ECG and stethoscope and medication despite the
falling-asleep-again-problem. I just wanted to know what it is, what caused it.

Over the time I found many people with vibrations in internet
but they were all somehow different.

I also had the almosr instant disappearance within 10-20 seconds after full consciousness.