Random Biological Facts
It takes a human sperm 90 days to be produced fully. Because the production line produces 1500 sperms per second, all the time, there is no gap felt in the availability, ever.
Every 10 years, the entire bone structure in a human completes full recreation.
There are more atoms in the human body than there are stars in the entirety of the observable universe. Here's a chart:
| Category | Value |
|---|---|
| Stars in observable universe | 2 × 10²³ |
| Atoms in your body | 7 × 10²⁷ |
Pretty cool.