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A single human sperm contains the 37.5mb of male DNA required to create a human child. That means an average ejaculation sees the transfer of 1,500 terabytes of information.gizmodo.com
Your body produces 25 million new cells each second. Every 13 seconds, you produce more cells than there are people in the United States.medindia.net
Humans are bioluminescent and glow in the dark. The light that we emit is 1,000 times weaker than our human eyes are able to pick up.io9.com

Humans shed 40 pounds of skin in their lifetime, completely replacing their outer skin every month.listverse.com
In one day, your blood travels 12,000 miles around your body. That’s four times the distance across the US from coast-to-coast.health.howstuffworks.com
Our brain’s connected neurons look similar to the structure of the universe. In a way, our brains are modeled after the universe. disinfo.com
Around 90% of the cells that make humans aren’t “human” in origin. We’re mostly fungi and bacteria.discovermagazine.com

Along with the five traditional senses of sound, sight, touch, smell and taste, humans have 15 “other senses.” These include balance, temperature, pain and time as well as internal senses for suffocation, thirst, and fullness.en.wikipedia.org
You’re a little richer than you might think. Inside all of us is around 0.2 milligrams of gold, most of which is in our blood Sadly, you’d need the blood of around 40,000 people to collect enough gold to make one 8g coin.telegraph.co.uk
The human brain uses 20% of the entire body’s oxygen and calorie intake, despite only accounting for about 2% of an adult’s body mass. listverse.com
If you stretched out the 300,000,000 capillaries in your lungs end to end, the line would extend from Seattle to San Diego, or about 1,300 miles.listverse.com
Some women see more colors than everyone else. Most people have three types of color receptors to see color vision, while some women have four or even five of these receptors and can see a wider range of colors.articles.mercola.com

A condition called synesthesia can cause senses to overlap. In other words, some people can taste words or hear colors.articles.mercola.com
The need to breathe so much is due to carbon dioxide buildup more than the need for oxygen. If there was a different way to get rid of carbon dioxide from the blood, we would only need to breathe at a rate of about once per minute.
Crying alleviates stress and allows humans to decrease feelings of anger and sadness. It physically does help to let it out.huffingtonpost.com
We also produce differently structured tears depending on the reason we’re crying. When put under the microscope, crying over grief, hope, or onions all produced a unique tear.