Tantric Technique to Raise Sexual Energy
Sit in rock pose. (Rock pose means to sit back on your heels with your back straight - Illustration #1 & #2).
Stretch your arms straight up such that the upper arms are hugging your ears. The elbows should be straight. Clasp your hands together, such that all the finger are interlaced, except for the index finger of each hand. The index fingers are pointed straight up and pressed together (Illustration #3).
Elongate your spine upwards, lengthen your neck and subtly bring your chin back and in, like a soldier at attention. This will align the spine with the back of your head.
Now begin to chant SAT NAM as follows out loud. Speak the sound SAT powerfully and as you say it pull your navel up and in towards the spine. Feel the sound SAT hammer the base of the spine. Next, relax the belly as you say the sound NAM. The sound NAM is made softly, as opposed to the sound SAT which is made powerfully.
Continue to chant SAT NAM along with the navel contractions at about 8 repetitions every 10 seconds or so. Find a good rhythm.
To end, inhale deeply and apply root lock, diaphragm lock and neck lock with your breath held in. Root lock is the contraction of the rectum, sex organ and lower navel, diaphragm lock is pulling up and in of the diaphragm and neck lock is to pull the neck muscles back while tucking the chin in and back slightly. As you apply all three locks, visualize energy being propelled up the spine and into your brain. You may repeat the application of triple lock (maha bandh) as above 2 more times if you like.
After completing Sat Kriya you must rest (preferably on your back in corpse pose) for a time equal to that spent doing this technique.