If somebody's heart stops due to a trauma, such as a car accident or a fall, CPR cannot save them. I know this, but I don't know if it is the same with cycling. I know you should ask the victim if they're okay and shake their shoulders firmly between two hands. Jerry is on his back, one foot clipped into a pedal, legs across the frame like he's resting. It is hot and sweat drips from the tip of my nose onto his face when I bend over. I shake his shoulders and ask, Are you okay?