Heart Rate Training is Dead, Long Live Heart Rate Training!

I remember my first heart rate monitor. A Polar S720i. It used infrared to download data. Infrared! The first time I wore it, it felt like magic. The device was a key to unlock secrets about my body I could have never observed before. I wore it when I exercised, I wore it all day, … Continue reading Heart Rate Training is Dead, Long Live Heart Rate Training!