clipped from: tantra-sex.blogspot.com   

1. Practicing semen retention does not mean "Never ejaculating." I simply means retaining semen long enough to avoid depletion.
   
2. Avoiding ejaculation for too long leads to congestion/stagnation (commonly known as "blue balls") in the male genitalia which can be a problem in itself.
3. Congestion/stagnation can be lessened through specific practices such as taoist male genital massage.
4. More important than simple semen retention is learning transmutation of the sexual energy, where the orgasmic impulse is directed up the spine, (spinal orgasm).
5. With practice, the frequency of ejaculation lengthens as does the time spent lovemaking.
   
6. Although orgasm may become more frequent and powerful, it becomes separated from the impulse to ejaculate so that ejaculation occurs only occasionally.
7. Eventually, the habit of ejaculation will be relearned so that ejaculation becomes difficult. When this happens, intention must be focused to make it occur from time to time."