Long (and personal) story short: I'm on some medications right now and the side effects are driving me CRAZY. I am not sleeping well and so am consistently tired, but the medications are also making me jittery. The doctor says that running should help get some of the jitters out, but I've been so tired that I've hardly been able to think about going running, let alone get up the energy to do it.
I just need to get to bed early tonight and get up and see how I feel tomorrow morning. If I feel ok, I'll go running. If not, at least I'll try a walk. Baby steps.