"Once you have proven you can focus all the way through the sequence, we apply that focus to the next step in your journey. If the position you chose ever progresses from uncomfortable to painful stop, rest for a few minutes, then pick another position. while you will have to learn eventually to focus through pain that is an advanced lesson, and only to be undertaken with a healer nearby. This is for you to learn, not to permanently injure yourself. Understood?" Do not hurt yourself, young man!