I get happy puppy hypomania. I get the grins and sometimes even chuckle for no reason. Racing thoughts cause my brain to outrun my mouth and people have trouble following what I say. I get a bit arrogant if it is more than slight. Interest in doing things picks up; the biggest obstacle to getting things done is deciding which thing(s) to do and I often end up with lots of things started and few if any finished. One of the sure signs is ability to stay up late and not feel tired in the morning.