Here is a list of every state of this human (probably useless because you may already now all of them)

-NOTE: THIS MAY BE UNFINISHED, YOU CAN COMMENT IF SOME INFO IS MISSING OR WRONG.-

Blinking - Human blinks every few seconds.
Causes: Happens naturally every few seconds.

Screaming - Human opens its mouth of fear.
Causes: Grabbed by Player, Falling/Thrown at high velocities and being at low oxygen levels.

Crying - Human cries in pain.
Causes: Being stabbed, shooted or every other form of pain/damage.

Pain Scream - Human scream and cries in severe pain.
Causes: Being brutally hurt by stabbing, shooting and others.

Holding Breath - Human holds its breath underwater.
Causes: Being underwater at high oxygen levels.

Sweating - Human will start to sweat.
Causes: Being at high temperatures and being pointed with a firearm.

Pale Skin - Human's head will become paller.
Causes: Having a very low bloodstream or low health.

Closed Eyes - Human's eyes will close.
Causes: Dying.

Zombified - Human eyes will turn red and mouth will be open.
Causes: Being infected with zombie virus.