I work in international development, where we talk a lot about the work (and sometimes the danger) involved in such basic tasks as fetching water and firewood. When I travel, I am awed by the great posture and muscled physiques of people who walk almost everywhere and do hard physical labour to earn enough to eat, then go home to places with few or no timesaving devices.
Today I did four hours of solid physical effort. Two hours of that was walking at a steady pace. That would have been enough to maybe get me to the nearest market on market day (though I had only a light knapsack, not a heavy bundle of things to sell or bring home). It would have been enough draw water, prepare a meal, wash dishes, feed and milk the animals and collect some eggs. There might have been a little bit of energy left (if not the time) to chop a bit of firewood or wash a few clothes. When I got home, I was thankful for the pouring rain, as it meant I had a legitimate excuse to avoid the gardening, something that a medieval housewife would need to do throughout the summer.
Instead, I had a nap and read a book. Had a really been a medieval housewife, that time would have been needed for spinning, weaving or child care. Plus, as a lower-class woman, I probably would not have had the luxury of tasty protein-rich or sweet snacks, as I did today.
As much as I appreciate not starving, dying in childbirth, or being killed by a preventable disease, I think we could go a long way towards really trying to live a medieval lifestyle. Less food, more exercise, local crops, lower environmental impact: all would be welcome improvements. They would even make medieval recreation more enjoyable, as we would have fewer injuries to people who aren’t used to being active.