> People feel the outside world is dirty and their babies are clean and that dirt is stress. I just stumbled across this the other day... "How mud boosts your

> People feel the outside world is dirty and their babies are clean and that dirt is stress. I just stumbled across this the other day... "How mud boosts your immune system" - https://www.bbc.com/future/article/20220929-how-outdoor-play-boosts-kids-immune-systems https://www.bbc.com/future/article/20220929-how-outdoor-play... > Children love getting dirty. They are drawn to puddles like muddy magnets, with no regard for footwear or the colour of their clothing. But getting mucky could have a powerful effect on their wellbeing, too. > "Don't get dirty!" was once a constant family refrain, as parents despairingly watched their children spoil their best clothes. Whether they were running through farmers' fields, climbing trees or catching tadpoles, it was inevitable that children's whites would turn brown before the day was over.