Suppose an addict always injects heroin in her bedroom at home, but one time stays overnight at a friend's house and decides to take an injection there. The addict will likely experience a(n) reaction to the drug at her friend's house

increased

Explanation:

I am pretty sure it would be increased due to the fact that she is in a different environment.

the more fit you are, the faster the recovery. your heart rate drops most sharply in the first minute after you stop exercising; it should then fall about 20 beats a minute—a drop of less than 12 beats a minute is considered abnormal. this “recovery heart rate” is measured as part of an exercise stress test.