Under what conditions does the heart rate change?
2 answers:
Physical activities
Emotions: (fight or flight mentality) nerves, even thinking of someone you like, fear, ect.
There are many conditions that makes someone's heart rate change. Below are a few.
1. The person does some physical activities
2. Someone stops doing physical activities
3. Someone is nervous can cause it to change.
I hope these help. Sorry if I misunderstood the question
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