The sample size is the western world, and we're at 70% of obese/overweight so clearly seating on your ass all day long isn't good. The average american walks something like 3k steps per day and its their sole activity. The #1 death cause in the west is directly caused by lack of exercise. How can people be in such denial ? If you have a full time desk job there aren't enough time in a day for you to over exercise, every single second you'll spend doing anything other than seating/laying down will b an improvement

> You can't prove that ...

Dude, open your eyes, look around you, seeing 70%+ of people having a beer belly at 30 isn't normal, it isn't healthy, most people don't even hit the bare minimum recommendations, I don't need a mathematical proof, it's all here in front of us