I cant give you the perspective of an adult but my son (13 yrs)certainly appears to have this. He doesnt have to be doing anything particularly exciting. Just being with other people and he throws everything he has at it. He talks excessively and gets easily excited and looks for stimulation in his interactions. Then afterwards he is exhausted. Sadly he cant then relax, his muscles are all fidgety and we often have to do things to help him relax e.g. weighted blanket. Not sure if this is what you are describing too?