Why do cardio machines need two hands to monitor heart rate but smartwatches only need one wrist?

Question

Why do cardio machines need two hands to monitor heart rate but smartwatches only need one wrist?

In: 670

Answer 1

Cardio exercise machines use the technology that requires a complete circuit for two reasons: 1. It is a more accurate heart rate. 2. To ensure you are using the machine properly. By using both hands to stabilize your body, there is less chance of using the machine wrong and injuring yourself.

People are real dumb sometimes and we like to do things the wrong way if seems a fraction more convenient. The exercise machine beeping at us to hold it properly to monitor our heartrate helps keep us in line.