I don't share your sarcasm. Working with your body and working with your mind aren't that different, it's just that the mind gets tired quicker. It's very hard to be doing concentrated thinking for 6 hours straight.
I may be wrong, but looking from the outside it looks to me like they are improving themselves as a person and earning a living at the same time.
I need to set aside time to improve my social and physical well being, outside of working time.
Don’t get me wrong I work with interesting people that I love, but we don’t improve our social abilities together