The reason your heart beats properly is due to a beautiful design and perfect timing. Imagine you could design a spark plug with a built in timer that emits an electrical spark at a set rate. Let's say this plug's timer is set for one second. So every second, this spark plug will emit a spark unless another plug nearby does so first. If a neighboring plug sparks first, the original spark plug will simply carry the electrical impulse to the next plug and restart it's own timer. We'll call the...
At rest, the human heart beats 60 to 100 times a minute, and each beat leaves us vulnerable to a heart-stopping occurrence known as "commotio cordis." An organized heartbeat is the result of a finely-choreographed flow of electricity through the heart. Following the moment of peak electrical activity, when the heart pumps blood out to the body, there is a split second where the heart begins to "reset" and becomes unstable. It's at this point that the heart is critically vulnerable to outside...