https://github.com/davepinch/pinchy.cc/blob/master/content/topics/places/roadways/washington-state-route-542/common-name/mount-baker-highway.md
According to Bentov, this change in resonance results from elimination of what the medical profession calls “the bifurcation echo” so that the sound of the heartbeat can move synchronously up and down the circulatory system in harmonious resonance approximately seven times a second.