I am having the same thing happen to me at night...but not every single night and of differing intensities and durations.. Vibration/buzzing/tingling mainly around the chest and collarbone area. Seems like around the same time between 1am and 4am. Sometimes I change my position and they go away, other times I have to get up and walk around until they will subside enough to go back to sleep. I am a 69 year old male and live a pretty heathy lifestyle although I do have a couple cocktails before dinner. This never happens during the daytime.