Teens who exercise regularly are also found to than less active teens.
a. use illegal drugs more often
b. have higher gpas
c. fight more with their parents
d. be more depressed

Teens who exercise regularly are also found to have higher GPAs than less active teens - b.

The reason for this is that these teens are usually the ones who can structure their time better and who can improve their circumstance independently of the situations they find themselves in. 

Ithink or blue