What can you do to prevent running injuries?
a. run on hard surfaces, such as concrete and asphalt.
b. reduce the amount of walking you do during running sessions.
c. wear properly fitting running shoes.
d. limit your water intake throughout the day.

C for sure. Wearing the right shoes are the best thing you can do to prevent injuries. Sure, you might be sore for a day or two because they're new but then once you break into them, they'll be better. 

Her parents start noticing changes about her. she's probably just competive though not on drugs

You did not show us the image of the burger, but i shall try to answer as best i can.  when purchasing food, always consider the ingredients as well as the person who prepared it. consider if they were hygienic people or not, in case the burger was infected with bacteria. no mortal should place an infected burger into their mouth.