So a couple of times in the past couple days, my little guy has been curling tight around my hand when I hold him. Then he lets go, only to latch onto his own head! He squeezes so tight that his mouth comes partially open.

Is he aware that he is constricting his own head, or is he accidentally hurting himself?
I want to make sure he knows not to squeeze too hard.

In short, is this normal behavior?