Hello Esther. I have a question about walking on a line. When you say the inner edge of each heel touches a line do you have any ways to practive this at home and what to be aware of when walking in public. Can you explain this concept to me a little more, and do have any visual examples I can look out for either in real life or on tv or the internet. Thank you for your time and your book has made standing unbeleiveably comfortable even for more than an hour at a time.