I think there are signs before these but these are the ones I notice myself: I get extremely sensitive to sound. We use a test at my therapist's office. He has 2 clocks that tick and if I am really irritated because they don't click in sync then I'm on the way up. I tend to jiggle my feet a lot on the way up which at least lets others know; sometimes I notice this, sometimes I don't and sometimes I notice and don't care or acknowledge it has meaning. I isolate more and more the more manic I get because I hate noise and light and movements; they all disturb me greatly and I get very irritable and don't want to accidentally take that out on people. Sleep goes away (although that also happens with anxiety or PTSD popping up or just for fun sometimes). I will forget to eat without reminders. I'm sure there are more; I never think about what it is like when it isn't happening.