Fact 1: Exercise has a positive impact on a human 's health.

Fact 2: All people belong to the human family.

Given the two facts above, answer the question "What has a positive impact on people?" with the following options: 
- flowers
 - sitting all day
 - bamboo
 - exercise
 - four hours of sleep a night
 - food
 - A computer
 - alcohol


 

    exercise     