Knowing that the best way to handle a snake (and essentially any creature) is to create minimal/no stress, I suspect these behaviors are harmful/stressful to the snake, but I want to know if any of these okay to do besides in an emergency:

1. Head touching
Anecdotally I know some owners say their snake seems to enjoy/tolerate this


2. opening of the mouth
I imagine its not okay and rarely tolerated, but I cant help but be curious.

3. hanging/dangling (like if 70% of his lower or upper body fell off of something while he was gripping with the other 30%)
This sometimes happens when he's exploring or moving around, and i'm never sure if I should quickly give his body support, or if its a good source of exercise for him.