Agreed, I usually try to keep my eyes open to fool myself that I'm not sleepy. My face is probably limp though. From what I've seen from recent neural nets I b

Agreed, I usually try to keep my eyes open to fool myself that I'm not sleepy. My face is probably limp though. From what I've seen from recent neural nets I believe it's possible to detect the pre-sleep phase given a training set of faces prior to dozing. Seems like that would be a hard data set to come by though.