Exercise doesn't have to be intentional. I think this is probably partly causal: https://news.ycombinator.com/item?id=5914630 https://news.ycombinator.com/item?

Exercise doesn't have to be intentional. I think this is probably partly causal: https://news.ycombinator.com/item?id=5914630 https://news.ycombinator.com/item?id=5914630