Here are your fun facts for this Friday:

• If you love all things fruit (and space), then you'll be excited to know that applesauce was the first food to be eaten by astronauts in space.
  
  
• Broccoli contains more protein than a lot of meats, including steak. Just another reason to add the green vegetable to your menu sometime soon.
  
  
• Pistachios are technically fruits. Think of them as the opposite of a peach. Instead of throwing out the pit and eating the flesh, we do the opposite with pistachios.
  
  
• SPAM stands for spiced ham. It's been around since 1937.
  
  
• Most countries don't refrigerate their eggs. In the US, they are considered perishable items and therefore have to be refrigerated, but they have a surprisingly long shelf life.
  
  
• Whether you realize it or not, you blink  20 times per minute. You can blink up to five times per second if you try, which makes the eyes the fastest muscle in the body.
  
  
• Earwax is technically a form of sweat. Bet that's one fun fact you kind of wish you didn't know now.
  
  
• Throughout an average lifetime, most people will spend an entire year sitting on the toilet.
  
  
• You're taller in the morning than at night. This is because, over the day, our cartilage compresses and makes us a bit shorter.
  
  
• The average adult human has 2,000-4,000 taste buds, and despite what you may have been taught, they are not visible to the human eye. Those bumps on your tongue are what the taste buds are on, but those aren't the taste buds themselves.
  
  
• Humans are the only animals on earth with chins. The scariest part is that no one knows why this is.
  
  
• On average, hair grows about 6 inches per year. As we age, some hair follicles stop producing hair, so hair loss and balding is common in older people.
  
  
• Blushing is caused by a rush of adrenaline. It's also genetic, so if you're prone to it, one of your parents is likely, too.
  
  
• Every two weeks, another language or dialect goes extinct. There is a language in Nigeria that is currently only spoken by four living individuals.
  
  
• The Australian Aboriginal language of Paakantyi is only currently spoken by 2 to 24 people.
  
  
• There are more than 200 languages have been invented just for television or movies.
  
  
• Dogs' sense of smell is 40 times more powerful than humans' — they have 300 million olfactory receptors. Dogs also have something called neophilia, which means they are attracted to new and interesting odors. 
  
  
• Dogs can also breathe and smell simultaneously, unlike humans (have you ever tried to breathe while inhaling through your nose?).
  
  
• Dogs have a dominant paw like humans have a dominant left or right hand. Can you tell if your dog is left-pawed or right-pawed?
  
  
• Dogs' noses are like human fingerprints; each one is unique.
  
  
• This is kind of a well-known fact, but it's random (and interesting) nonetheless: Most people can't lick their elbow. You can try it if you want!
  
  
• Dolphins sleep with one eye open because only one of their brain hemispheres sleeps at a time. The left eye closes when the right half of the brain sleeps, and vice versa.
  
  
• If it takes you a while to fall asleep at night, you may not be too pleased to discover that most people can fall asleep in just seven minutes. Maybe it's time to start counting those sheep again.
  
  
• Originally, vacuum cleaners were horse-drawn. The horse-drawn buggy would announce to all your neighbors that you were having a special treatment done. Great advertising!
  
  
• Alfred Hitchcock was scared of... eggs. Let's be thankful he didn't create a horror film about eggs.
  
  
• Umbrellas were once only used by women. They've also been around in some form since 500 BC.