Have to put in my 2 cents here. I agree with your extremely well researched article about the fitness industry and the lies they peddle.

That said, I used Centr for a few months a while back and really liked it. The recipes were great, the workouts were amazing, and the app itself had a great UX.

So, as long as you’re not trying to look superhuman or achieve some crazy extreme, this kind of content can be useful. Just take the possibilities pushed by the marketing teams with several large grains of salt. And get fit (if you are so motivated) because it makes you feel better and more functional, not for solely cosmetic reasons.