I've noticed for several months I am expericece a small vibration or tremor thoroughout my body when I waken or just before I fall asleep. It isn't painful. It is so barely noticeable that I wouldn't even notice it except that on occasion it seems to "stop" vibrating for a second. That's when I notice it - when they start back up again. They are just annoying. It feels like I am on something that is vibrating (like laying in a car) and the vibration goes away when the gears shift, and then returns. It stops momentarily about every 30 seconds for a couple of secons (though it has no set clock or time frame I can keep track of). My husband doens't feel the vibrations so it's not apparent. I am 43 and a female.