A person wearing a hat, sitting hunched over with one knee up looking down at hands.

Person Sitting with Knee Up 

A person sitting hunched over on a sofa with a video game controller in his hands. 

Person Playing Video Games

A standing person reaching their arms over their head.

A hunched boxer facing sideways with lifted arms and boxing gloves.

A POV first-person sight over the top of a rifle or gun.

A sitting person bent over in a typing position.

A sitting person bent over in a typing position with headphones on.