I swear I don't know how I operate. When I'm low on sleep I'm either, pissed off at everything and groggy, or I radiate crack head energy. Like I pulled an all nighter last night and I randomly started giggling at 4 am and did the scrunchy challenge(where you fit as many scrunchies on your head) and I wasn't tired the next day and was talkative, while my sister who got sleep is tired and stressed out today.