1. Sperm swim like Olympic athletes: The common tale has it that millions—somewhere from 20 to 300 million, to be exact—of heroic sperm swim in competition with each other to reach the egg. No.
First, sperm really don't swim straight - for the most part. Often the sperm's ability to move, known as motility, is classified into one of three groups: progressive motility, non-progressive motility, and non-motile.
Rather than a straight path, the sperm's path is a "challenging military obstacle course" and needs the help of the female reproductive organs to make sure it reaches the finish line. In fact, most of the work of movement is done by the muscles of the uterus that guide the sperm towards the egg.
2. Thicker sperm is more fertile: This usually means that there is a high concentration of sperm or a high number of irregularly shaped sperm.
3. Sperm only live for a short time: Not always! Life expectancy depends on the place where the spermatozoon "lands" after ejaculation. In a cold and dry place, sperm can rarely last up to 30 minutes.
4. Sperm remain fertile and healthy throughout a man's life: Sperm production continues indefinitely, but sperm quality and motility decline with age.
5. Every sperm is healthy: Most sperm never reach the egg for a number of reasons. As long as 40% are mobile, we are dealing with a fertile person and from that 40%, not all reach the egg.
6. Pre-sperm cannot cause pregnancy: Wrong! Biologically, pre-semen should not contain sperm - but sperm remaining in the urethra, the tube through which urine and sperm are expelled, can mix. So even if you remove your penis during ejaculation, there is a small chance that some sperm will cause pregnancy.
7. Pineapple makes sperm taste good: The aroma and taste of semen, like that of many bodily fluids, is influenced by genetics, diet and lifestyle. Just as everyone's breath smells different, everyone's sperm has a unique scent.
Source: Healthline
