I took the first dose of lithium this morning at work. I sat down for an hour to test a student. I didn't realize my foot fell asleep. I stood up and injured my foot trying to walk. It kind of fell to the side and was unable to function for a minute. My foot fell asleep briefly again while I was walking. I was fine after that. I went to a meeting and sat down for another hour. I felt my foot falling asleep but it was brief and I was able to walk afterward. My foot still hurts from bending it earlier. I wonder if this effect is from the lithium. Other than that I don't feel any physical side effects. I feel okay mentally. It'll take some time to see if lithium helps.