it's because we stopped "moving". for example, when was the last time you "ran to the store" to grab something like milk? I wouldn't call that exercise but it'

it's because we stopped "moving". for example, when was the last time you "ran to the store" to grab something like milk? I wouldn't call that exercise but it's definitely something current generation lost compare to all the previous ones. Including myself and friends, our weekend preferred activity are changing from going out (to parks, movies etc) to "Netflix and chill". think about this, "Running" didn't become a thing until the late 70s. People simply didn't do much to stay "fit" before that. You can attribute it to biomes or genetics, but this is just within one or two generation. What I would find interesting is if we can find data similar to what we record with fitbits, ie. # of steps per day etc. from people 30/40 years ago, and compare to actual fitbit data of today. I'd wager we'd find some interesting correlations.