I cannot prove anything but it feels that modern lifestyle was seriously absurd. It was just comfort pushed to eleven. Since I took jogging back, I can also go 5 km or even 10 km by foot with ease. It's "worse" than that, I actually crave doing so. It's more pleasure than effort. Mind and body. Maybe that's just me...

Industrial revolutions required us to specialize and not spend time walking or working hard physically, but now that we're so comfy we're somehow deprived.

ps: I'd say it's super healthy to get some big big meals at times just because you enjoy it so much. Life's not just about being on a tight rope.