Situation 4: No effect of gravity. The heart needs to work harder to send blood to all parts of the body.

Have 2 men and women tested in weightlessness.

Except "69 type".

Select 10 poses with high feasibility.

But because there is no gravity in space.

Situation 5: A mutant may be born.

For the rest of the poses, you must use heavy estic straps to bind both sides.

year 1996.

"69 style", "female upper position", "traditional pose", "hip ing style".

NASA ducted a love experiment on a spaceship

There are only 4 positions suitable for use in zero gravity.

cause of the decreased secretion of testosterone. Decreased libido.

Situation 6: Sweat, tears and body fluids are all floating in the space station.

Situation 7: If you 't accept the bondage. Then don't have sex on the space station.

in.

The four poses are: