Yesterday I arrived exactly 15 minutes early to prepare for my first cardiac rehabilitation workout at Troy Beaumont Hospital. This alone is a minor miracle in July, where Michigan motorists routinely dodge orange barrels amid road construction at virtually every turn. This is also known as summer. On top of that, there were no regular spaces in the hospital’s west entrance lot, and the parking garage was full. So, I opted for valet. (Don’t judge me. Next time, I’ll ride my bike. Probably.) After checking in and attaching three sticky electrodes to my chest, I placed the EKG telemetry monitor in its handy white pouch around my neck and awaited…