After many hours of tuning, my heartbeat map demo is ready. I've added a lot of things for testing different controllers and to account for different hearts. In the video, you see me place the index controller on the skeleton. That is about where you should place yours when you want to detect your heartbeat. The filter is now much better than before because I switched from using degrees to using angular velocity for detection. That makes it much faster at detection and recovering from an accidental beat. 
Check it out if your interested
https://vrchat.com/home/launch?worldId=wrld_cbae992f-b394-4677-a115-f3670051f785