[jaravis]

Great article - we saw the same lack of correlation between activity level and weight when analyzing data from 750+ fitness tests:

https://hack.fitness/2017/04/09/what-we-learnt-from-750-fitn...

Increasing activity however does have a positive impact on your fitness (specifically VO2Max) -- the challenge is that this increase in fitness is invisible to most.

That's a big part of the reason why we started Revvo (http://revvo.co) - to make it easy to measure the vital but often invisible elements of fitness.

[trendia]

The authors only looked at weight and BMI, and not bodyfat % or lean mass, which are much better indicators of health than weight or BMI alone.

Someone who is 6' and 200 lbs could either be a body builder or a coach potato, and they'd have the same BMI.

[jaravis]

Sure -- but body fat won't change much with aerobic activity (such as running) without also impacting weight.

[bernardino]

About Revvo: I think the bike should be better designed i.e. similar to indoor road bike trainers.

[jaravis]

we actually integrate an indoor bike trainer (wahoo kickr).