Anyone else experience these sudden jumping movements in their arms, legs and even head? It started a few weeks ago when I started to get really, really lethargic. When I try to sleep all of a sudden one or both of my arms will thrust upwards. On the train the other day my right shoulder, arm and my head all went spaz on me and jumped - I think I scared this old man across from me heehee. I had a blood test done last week for anaemia so maybe its got something to do with that?