You don't really see what type of dangerous situation but since you asked a dangerous situation you could do is a stunt motorcycle guy that rides his motorcycle over a pool of sharks. Or a man who wears red in a Bulls arena to get the balls attention but he risk dying if he gets punctured by one of the bulls horns. Or another dangerous situation could be someone entering a monster cave. Or another dangerous situation could be someone meeting up with a Stranger online. There's just so many situations
Answer: Those parts is were all the oxygen is distributed through the human body, and so technically it can be considered the respiratory system.
Causes stress? Where are the choices
My guess is...
Less sleep
Bad energy around your environment
