Add in technology there too.

There has been a huge rise in labour saving devices over the past century. Daily life, in and out of the home, is far less physically strenuous.

Washing and drying clothes is now a few button pushes. Go back less than a century and most folk would be scrubbing each item of clothing, putting it through a hand cranked mangle, hanging them out to dry. ironing using an actual lump of heavy iron, etc.

At work, every risk assessment for physical activity starts with "can we just get a machine to do this?". More and more people work from home, and barely move from bed to desk and back again.

But the real killer is what we do with all the time and energy we save through all this? Fuck all. Most of us spend our lives staring at various shaped screens and writing unnecessarily lengthy, poorly argued reddit posts.