The answer is : Tar
Tar is some sort of residual substance that we commonly found in tobacco products, which could cause the symptoms you've mentioned above
not only that, Tar is a highly carcinogenic substance, which mean that it generate high risk of cancer it get into our system
Answer:
Family history. Eating disorders are significantly more likely to occur in people who have parents or siblings who've had an eating disorder.
Other mental health disorders.
Dieting and starvation.
Stress.
Adrenaline regulates the fight or flights response.
I believe it is Amy's, because you said Amy's target heart rate zone is 140bpm -- 186bpm. Thus, Amy's is higher
