Who knew accurate calorie count was that simple. I bet professional physicians and measurement labs can now finally get rid of their $100.000 equipments.
Well, for instance, clicking on your "Adidas" link, you'll see it goes to "go.skimresources.com"
From the site Redirection:
"We’re Skimlinks — a service that helps online publishers earn money.
When links in publishers’ content lead their users to click through and buy from an online retailer...
Respectfully, I'm seeing all kinds of affiliate links in your list (except for the one product not recommended)... It'd be appropriate to state that you're deriving some kind of benefit from your recommendations.
Probably realized too few people would pay for a service that have been readily available to most phone/GPS users anyhow - Garmin "Livetrack" (which actually works rather well), Whatsapp's "share location", iphones "Find my friends", etc.