Why having s*x twice in a row increases chances of pregnancy

Recent studies have shown that the second orgasm produces more fertile sperm in an hour.
Many things are tried to optimise fertilisation.

From raising legs (which has been debunked by some experts) to "Storing" up sperm for up to three days before having intercourse.

Women, especially the ones over 35, are encouraged to go on a Mediterranean diet so as to increase their chances at pregnancy after an intro fertilization procedure.

However, with this method, British scientists were able to show that if the uterus makes rhythmic, pumping movements- it should be able to absorb sperm faster.

Sex the second time around within an hour of the first orgasm could triple chances of conception.

According to Bild, in the investigation, the odds increased from six to 21 percent, if in an artificial insemination, the seeds of the second ejaculation were used.

Experts theorise that the second ejaculation contains a higher sperm count and higher motlity.