the first exercise, I mean in lesson 1, what am I exactly supposed to do? Only try to flow your ideas and thoughts in your mind? Or maybe do I have to really sense the relation between solar plexus and brain?

44: Now make the application: Select a room where you can be alone and undisturbed; sit erect, comfortably, but do not lounge; let your thoughts roam where they will but be perfectly still for from fifteen minutes to half an hour; continue this for three or four days or for a week until you secure full control of your physical being.

45: Many will find this extremely difficult; others will conquer with ease, but it is absolutely essential to secure complete control of the body before you are ready to progress. Next week you will receive instructions for the next step; in the meantime you must have mastered this one.