I was wanting to get https://gel-v.com/gelv/v-kit.html and for the v-belt I need to know how big I am. I took a tape measure and measured two inches below my belly button, as per the site, and got 39 ...
I can measure my general fatigue every morning by checking my resting Heart-Rate. It's shown me quite effectively, when I am a bit sick or sleep to little, my resting HR jumps up to 10 beats higher. ...
Been researching and it would appear that the only difference between the two is with the Pro you get an extra gel, and the Personal Software is severely limited. Has anyone used both systems? ...