I haven’t read OP, but there are enough people in our culture with a monomanaic tendency who only need an obsession to go overboard all unsupervised. So they might start running a little, of course slow to start because they physically can’t take it, but after a point they might not notice that adding more and more activity volume can’t just be done forever just based on your gut, dayfeel, and no pain no gain. Or someone reads about meditation and starts doing hour-long meditations, then soon retreats. Then their mind gets hit with an uncomfortable and disturbing realization while their minds are figuratively in a bad and structurally weak yoga pose. But why didn’t the meditation book warn about this? The meditation book aimed at people who successfully will do it for twenty minutes a day and will have 90% no long-term follow through.