Question

Suppose a friend is always tired because she stays up late watching television. Which factor is having a negative influence on her health?

Answer 1

Her watching television is constantly straining her eyes. And the fact that it's late at night so she doesn't get much of a chance to rest her eyes is another reason behind why that's bad. Staring at any screen for too long causes a negative effect on the person's sight. It causes their eyes to focus harder on the images or words. 

Answer 2

-tired
-lack of concentration
- A decrease in memory
-a decreased immunity
- A decrease satiety
-a increased appetite
-an increase of emotionality
-an increased risk of accident
-a loss of brain mass