I was wondering, what is the difference of these different approaches of ultimate abstinence? Sure, for most guys orgasm and ejaculation always come together. But, as we know, it's possible to learn to have only orgasm without the ejaculation. For someone who practices semen retention as a lifestyle (as distinguished from the hard mode reboot which is practiced for a limited period of time to reboot an addicted brain), for someone who says 'semen is life force and when I lose semen I lose life force', the ability to reach an orgasm without ejaculating can make a big difference for his sex life IMHO. Now karezza say this: the male ejaculation isn't the problem. It's the orgasm who drains you out of your energy, destroys your mood, your spirit and harms every intimate relationship. (Correct me, if I'm wrong). So what works for a male semen retentior - O without E - wouldn't be allowed in "karezza mode". For every guy who hasn't yet found the Challenge hard enough for him: karezza is the monk mode of semen retention.