Why is Pulse Rate used to monitor stress?
Well, I sort of have an answer but it's not very well developed. My answer would be:
Pulse rate is used to monitor stress because when your surroundings act as a stress to your body, it will respond to it by trying to get rid of it.. etc..
This is for homeostasis. Any help is appreciated! 
Hm.. well that kind of puts me on track, I was thinking that as well. Thanks Jen~
well homeostasis is when your body adjusts to the temperature, and when your stressed your blood pressure rises which makes the Heart rate elevate..so yeah..sorry if that didnt help
Jonathan Creek s01e05 the house of monkeys - pulse monitor
