It’s part of the reason we don’t want to get too comfortable when it comes to survival matters.
When there is little we have to do for ourselves, mental activity — thinking — increases, especially the experience of anxiety.
That’s ironic, isn’t it? We create comfort to ease anxiety and “discomfort” but end up increasing both.
Upon waking, if you know there is a field to till to care of your family and grave consequences if the work is not accomplished, you’re not going to worry about 99% of what modern man and woman worries about.
That’s the thing about the spirit of work of this kind—it hones and focuses mental activity. It’s why a little discomfort was built into the game—to keep us from getting too comfortable and thinking too much.