Polar Grit X review & 99 kilometers of running
The Polar Grit X sportswatch first piqued my interest back when I saw that Yuri Klim, the winner of Chornohora 2020, had one. I got…
How and Why Should You Run at a Low Heart Rate
If you are looking into the topic of heart rate based running, it is likely that you already have a basic understanding of your heart…