Buzzing and vibrations physical changes are often the case when meditating. If you are too hypersensitive, you may want to consider more regularity in your life, strengthening exercise, ...
The inner wave like sensation was a feeling like waves of the ocean but when laying in bed. Being a group, 3 noticed it at the same time, and we contributed it to mold. And mold was there. When removed the waves went away. If you experienced mold, a physical inner cleansing, strengthening program and healthy diet may help get back to normal. However, a jerk can also occur with returning back to the body after astral travelling. I am surprised that in this discussion not more consider a more spiritual cause, which also includes tingling, ringing of the ears, and jerking of the body, etc.
Found this with google! Scary that it's on an MS forum though, never considered that I might have that... I've been having short bouts of buzzing in my hands and upper thighs mostly for a while now, short and real enough for me to actually check if my phone was near that spot, but lately it's been increasing in frequency so I figured it was time to look it up. I'm a 22 yof and I'm not diagnosed with anything but ADHD and Raynaud's syndrome I suppose, but I really, really think I have hypothyroidism. I have at least 90% of all of the symptoms I've ever seen listed for the disease, and every time I get to looking up a symptom or group of symptoms I get diseases (chronic fatigue syndrome, fibromyalgia, Lyme disease, narcolepsy, anemia, etc) that all just seem to be related to hypothyroidism somehow or commonly confused with hypothyroidism, but I've gotten 2 blood tests showing up negative and my doc refuses to consider it anymore.
Has anyone here ever considered that they might have hypothyroidism? A few of the posts above certainly sounded like they might!
If you read Amy Tam and her Lyme disease accounts, she too feels like she is buzzing. I know it is BACTERIA, bacteria that cause infections and probably autoimmune problems. These guys reside in your gut mostly from the information I've been collecting, but think in brain also, in my case.
So why would you vibrate? I'm guessing it's your body trying to keep your temp up to fight off the anaerobic (live w/o oxygen) bacteria. As some expressed, they keep you up at night because of the vibration. I just googled "body vibrating" and came on this sight.
Get a thermogram and see if you have gut inflammation (there is no allopathic test for it). Also, if you've got MS, look at Dr. Terry Wahls' site. She beat MS.
They did the exact same thing to me. The idiot neurologist said psychiatrist only after he couldn't decide what it might be.
I have had the vibrations/buzzing on my left side non-stop. Mine are def the result of ms, they came with a bad relapse in 2011. I think you can get them from certain drugs too...