How does he sleep like this?

We never find Charlie on his pillow and under covers. He is always in some strange or uncomfortable looking position. We assume he goes and goes and finally his body just shuts down with exhaustion and this is how he ends up! 

(Some how all of his guys are with him (above his head)

(Sitting up and was clearly reading) 

(Done and done!) 

(Sideways with the overhead light on) 

(He made mommy and daddy before falling asleep)