So having just completed a half-hour on the cross-country skiing exercise machine thing and the digital readout says that I have maintained an average heartbeat of 293 beats per minute throughout the course of the run. Does this mean that ...
1. I am suffering some sort of heart attack? Stroke?
2. My newly installed bionic heart is functioning exactly as designed?
3. Turns out, I'm not human.
4. The sensors on this thing are not to be trusted.