The Yogi exercise for transmuting reproductive energy is simple.  It is coupled with rhythmic breathing, and can be easily performed.  It may be practiced at any time, but is specially recommended when one feels the instinct most strongly, at which time the reproductive energy is manifesting and may be most easily transmuted for regenerative purposes.  The exercise is as follows:  Keep the mind fixed on the idea of Energy, and away from ordinary sexual thoughts or imaginings.  If these thoughts come into the mind do not be discouraged, but regard them as manifestations of a force which you intend using for the purposes of strengthening the body and mind.  Lie passively or sit erect, and fix your mind on the idea of drawing the reproductive energy upward to the Solar Plexus, where it will be transmuted and stored away as a reserve force of vital energy.  Then breathe rhythmically, forming the mental image of drawing up the reproductive energy with each inhalation.  With each inhalation make a command of the Will that the energy be drawn upward from the reproductive organization to the Solar Plexus.  If the rhythm is fairly established and the mental image is clear, you will be conscious of the upward passage of the energy, and will feel its stimulating effect.  If you desire an increase in mental force, you may draw it up to the brain instead of to the Solar Plexus, by giving the mental command and holding the mental image of the transmission to the brain.  The man or woman doing metal creative work, or bodily creative work, will be able to use this creative energy in their work by following the above exercise, drawing up the energy with the inhalation and sending it forth with the exhalation.  In this last form of exercise, only such portions as are needed in the work will pass into the work being done, the balance remaining stored up in the Solar Plexus.  You will understand, of course, that it is not the reproductive fluids which are drawn up and used, but the etheripranic energy which animates the latter, the soul of the reproductive organism, as it were.  It is usual to allow the head to bend forward easily and naturally during the transmuting exercise.

(10) Brain stimulating.

The Yogis have found the following exercise most useful in stimulating the action of the brain for the purpose of producing clear thinking and reasoning.  It has a wonderful effect in clearing the brain and nervous system, and those engaged in mental work will find it most useful to them, both in the direction of enabling them to do better work and also as a means of refreshing the mind and clearing it after arduous mental labor.