Lack of sleep for me usually results in my short term memory going fuzzy. I won’t finish sentences properly. I’ll walk into rooms and not remember why. I’ll eat dinner and then ask “So, what are we having for dinner tonight?” I wish I could have some gauges installed that would show when I’m low on food or vitamins or sleep. It will make it more obvious when I should be sleeping instead of eating a 2nd bag of cheetos.