Myra is sitting home alone on a dark and stormy night watching scary movies on Netflix. As she sits alone on the couch the music begins to change in the movie and the monster appears attempting to kill the main character. She yelps and jumps in her seat. She swears she can hear her heart beating she even feels a little hot . She decides that is enough of the scary film for the night it's just at the TV about 5 minutes later after scrolling on Instagram she notices she can't hear her heart any longer and she feels relaxed again. Explain it is a negative feedback loop or postive feedback loop?