Ok! You give me a hard time! We have a tape with time and date stamped, to prove it. For your convenience, I extract 4 frames, including begining(start), achieving orgasm, the 20th-cycle orgasm and rest(end), to show you in the following.

In fact, this lady had achieved multiple orgasms (20 cycles of the uterus contraction) in about 30 seconds (75 swings) after she started swinging. These pictures show that her swing stroke was about 6-8 inches and her low body also performed twisting motion, in addition to swing. This means, her motion is composed of swing and twist. Her swing rate is 0.4 seconds per cycle. I estimate the total inertial force acting on the man's pubic borne and the penis base is around 100 - 150 pounds.

For the best result, the penis should be powered up to the 2:30 position.

Note: I have included three (3) samples of the voice responses to multiple, sexual orgasms in the CD-ROM Version of this book; one of the sample is the voice(moan & cry) response to the 20-cycle orgasms . You will also hear the trans-harmonic breathing, that tells men how to use the Sexual ChiKong breathing for prolonging intercourse, and women how to use the sexual ChiKong breathing to synchronously contract her vagina muscle for the excitation of multiple orgasms.