We recently went to Sydney for my nephews 6th Birthday party. It was at an indoor car racing track. Miniature cars on electric tracks that is, not life sized ones! The kids had fun racing their allocated car around the twists and turns of the track using their hand held controller.
I couldn't work out why I had a very anxious feeling in the pit of my stomach as the races progressed. Suddenly it clicked. These beeps were happening at a random rhythm.
It sounded exactly like the beeps on our heart monitors in the hospital. If any of my patients had an irregular heart rhythm like that I would be calling the Doctor!