There is some reason to believe that prescription drugs might affect the capacity for multiples. Bear in mind that I am not recommending that forum readers/members rush out and ask their health care providers for prescriptions. Similarly, there are drugs that might be necessary for health reasons, but nevertheless adversely affect the capacity for multiples. Your physician is the best source of advice.

Having said that, a couple of observations are in order.

1. Women appear to physiologically more capable of multiples than men. With appropriate stimulation (typically including a hand-held vibrator or even a Sybian™), women can learn to experience multiples. Whether this is because their orgasm is physiologically different from men's; whether this is because of their hormones, no one really understands. But set women's physiology aside for a moment.

2. If we begin from a radically different point and ASSUME that men (like women) are generally capable of multiples, then we can reasonably ask how generally men function differently from that normal. Note that what I've done is asserted that men are generally capable and then ask what the normal state of affairs is.

3. Jack has focused on uncoupling orgasm from ejaculation, recognizing that ejaculation leads to transient loss of erection. The reason that this line of thinking has evolved is that about 1/3 men describe themselves as early/premature ejaculators.

4. An alternative line of reasoning is that if those men are capable of multiple orgasms, then maybe the issue is not premature ejaculation, but premature orgasm. That is, they need to develop the capacity to manage their sexual tension. In this interpretation, learning to manage that sexual tension is probably what the KS is doing, helping to learn the cycle of build-and-release. The separation of orgasm from ejaculation merely becomes a secondary effect.

5. If that line of reasoning has any substance, then prescription drugs that have delayed ejaculation as a "side effect" might also be expected to facilitate multiples.

6. There is sort of a natural experiment here. SSRI-type antidepressants--Prozac, Zoloft, Paxil,... have differing effects on ejaculation. For example, Zoloft has virtually no effect, whereas Paxil significantly delays ejaculation. It would be of interest, therefore, to compare men (and for that matter women) taking the various SSRI drugs with respect to their capacity for multiples. The logic predicts that those who experience delayed ejaculation might be doing so because they can better manage their orgasm and thus might be able to do multiples more readily.

Let me repeat, I am not suggesting anyone change their medications or ask their doctor to change their medications. This is an hypothesis, not a recommendation. But it would be interesting to try teaching KS techniques to men who have experienced delayed ejaculation --whether the delay is seen as a desirable or undesirable side-effect--- in response to prescription meds.