Unconscious Data: Sensor

I plan on using a heartbeat/pulse sensor as my "unconscious data" sensor. I am curious to see how external forms of entertainment effect the heart rate.

Netflix and other online streaming services have been releasing entire seasons of their produced television shows at a time. Many of these shows tend to be binged immediately after their release. I wish to understand how each episode and season of these shows are structured in order to keep the viewers hooked by analyzing the data of the viewer's heartrate throughout their viewing.