The way that humans improve is through different kinds of challenges and in different kinds of discomfort. The message of the book is not just, you know, go haphazardly get uncomfortable. It's like there are certain things that we faced as we evolved that when missing, as they are now, if we put them back in our life, we can improve our health or happiness. You must be familiar with the term anti fragility. Yes, i love that term totally.