Tracking technology worsens prospects for the layperson. I started writing a very lengthy piece examining this phenomenon 4 years ago; and it’s such a dense subject I’ve yet to finish the first draft. Here is a short and concise article which covers one side of the psychology driving these ever-worsening outcomes: https://medium.com/@benhall_86389/is-your-fitbit-making-you-fat-most-likely-and-heres-why-a59cc290072
Basically, it comes down to the rates of obesity-increase align precisely with the rates of fitness tracking tech adoption. Since non-specialists don’t know how to use data, the device becomes a totem of affirmations, rather than a tool to create ever-sharpening strategy. Long story short: if you use a tracker to pat yourself on the back (rather than tease out data trends in order to create better planning), stop using it.