From a purely biological standpoint, ejaculation only needs to last long enough for enough sperm to be released to fertilize the egg. ... Energy" is a popular one that reveals the how to of such techniques which previously were highly gaurded secrets certainly never revealed to westerners..or so they say. read more
__ Most men need time to "recharge" after orgasm and ejaculation. After an orgasm, most males are not able to have another orgasm for a period of time even with continued stimulation. That time frame can be anywhere from minutes to hours or even a day. read more
Apparently, "Extended orgasm is a single orgasm that maintains the level of pleasurable sensation at climax over a period of time. The climax is often rounded or flat like a plateau. There’s no limit in length of time; however, one does need to build up the length of extended orgasm. read more