Hi Last night while resting near my kids, a sudden onset of chills happened. My whole body was shivering, face, legs, arms, everything! My muscles began to tighten up, and I had no control, to the point where I couldn t move. I took a hot bath, which didn t work for a while. About 2 hours later I was fine., This has been the scariest moment of my life. Do you know what this could be?