We have an expression for someone who is overweight, doesn’t exercise, and whose health is declining.
A couch potato.
Unfortunately, couch potato describes most people today.
Our ancestors were not like this at all.
They couldn’t shop at a supermarket for their food, but had to hunt and forage, or grow it from behind a plow.
They were outdoors every day, bathed in light.
They didn’t have artificial light at night to disrupt their sleep.
They were far more exposed to cold and heat than we are.
They didn’t have the luxury of three meals plus snacks every day.
And they were lean, fit, and didn’t suffer from chronic disease.