Here is Meditation Three from the Master Key System
Meditation three progresses from the previous one.
The intention of the author was to start with the first one and not skip ahead to the next one before each one has been completed as instructed.
Meditation Exercise 3:
For your exercise this week, I will ask you to go one step further.
I want you to not only be perfectly still, and inhibit all thought as far as possible, but relax, let go, let the muscles take their normal condition.
This will remove all pressure from the nerves, and eliminate that tension which so frequently produces physical exhaustion.
Physical relaxation is a voluntary exercise of the will and the exercise will be found to be of great value, as it enables the blood to circulate freely to and from the brain and body.
Tensions lead to mental unrest and abnormal mental activity of the mind; it produces worry, care, fear and anxiety. Relaxation is therefore an absolute necessity in order to allow the mental faculties to exercise the greatest freedom.
Make this exercise as thorough and complete as possible, mentally determine that you will relax every muscle and nerve, until you feel quiet and restful and at peace with yourself and the world.
The Solar Plexus will then be ready to function and you will be surprised at the result.
– Charles Haanel