Answer: breaks in the skin
Explanation:
The arteries carry oxygenated blood away from heart and then re-takes it back to your system
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
You should do your weight divided by your age and the number in total is the amount of water you should drink a day to be healthy. <span />
If you are physically fit and are good with academics you will be a very healthy person your true friend, murdle