Your goosebumps think they’re being helpful.

While the appearance of goosebumps is often associated with the thought of something creepy, we must say that goosebumps appear pretty strange. Call it a byproduct of evolution if you have to, but if humans ever had fur in the past, goosebumps would actually be less strange and more rational. And yet, in this modern iteration of the human body, goosebumps still occur involuntarily when the small muscles at the bottom of a hair follicle contract, causing the hair to stand up.

In animals, where feathers are often in the place of hair, raising goosebumps means raising feathers. Our bodies trigger this defense mechanism when there is a perceived threat, allowing them to appear bigger and more intimidating. Something similar happens to humans sans the feathers. When cold air passes, or when we experience strong emotions like shock or fear, and even in a sudden surge of awe or inspiration, we might feel goosebumps crawling on our skin, thinking perhaps that our bodies could use an extra layer of protection.

You just can’t stop yawning.

Laughter isn’t the only contagious thing. Researchers reveal that yawning is too, and one errant yawn is likely to generate a series of yawns within a group of people. But the real reason why yawning, bizarre as it is, even occurs is still a mystery within the scientific community. Many studies have delved into why we have this reflex and what purpose it serves, but there have been no definitive answers, only acceptable theories as to why people yawn.

One prominent theory is that yawning allows cool air in and helps the brain regulate its temperature, a feature aptly called thermoregulation. Another suggests that it is the body’s way of waking itself up by stretching the lungs, flexing muscles and joints as well as forcing blood to the head in order to increase alertness. Whatever the reason, yawning is something our body does that we have no control over. And while the act itself may look bizarre on the outside, it’s actually a helpful bodily response from the inside.

Saliva is constantly flowing into your mouth.

How much saliva is there in your mouth right now? If you try to empty it with a swallow, you’d be surprised at just how quickly it fills up again until pretty soon you’d have to clear it once more from your mouth at the risk of drooling ridiculously like an infant. Without thinking about it, we are constantly making saliva. Then, we slosh it around and swallow it. However, the whole process — no matter how gross or tiresome swallowing saliva — almost goes unnoticed. Thankfully, spit is just another vital bodily function you don’t have to think about.

Throughout the day, salivary glands in your mouth make a whopping two to four pints of saliva a day. That’s like drinking four to six cups of your own drool daily! While saliva can sometimes feel like a nuisance or an inconvenience you can’t seem to get a grip on, it is actually crucial in maintaining good dental health as it neutralizes acids produced by bacteria, limits bacterial growth, and washes away stray food particles. It also enhances our ability to taste food and makes it easier for us to chew and swallow. I don’t know about you, but I’d rather have enough saliva than suffer from a dry mouth any day.

Sebum is layering itself all over your face.

While oil isn’t the worst thing in the world, it can be pretty disgusting when it’s literally pouring out of your face. Sebum, which is the oily secretion of the sebaceous glands, seems to be doing exactly that, rapidly being produced around the clock and leaving your face with a sticky sheen that looks like you’ve been slathered all over with butter. This film of oil coming out of their facial pores is pretty thin for most people, but others aren’t as lucky. Some people produce more oil than normal, turning what’s supposed to be a protective layer into a stubborn, greasy film you could probably fry an egg on it.

The amount of oil on your skin is a delicate balance that, when off, can tip you either in the direction of dry, flaky skin or create terrible acne breakouts caused by excess sebum. This balancing act is so volatile it has driven people crazy, often pushing them to obsess about buying face products and serums in an attempt to have perfect skin. Most of the time, you can achieve this balance through good facial hygiene, but it also helps if you have a healthy diet that is light on oily foods. But to truly have luck on your side, you only need a good set of genes. Otherwise, don’t count on turning off the oil factory on your face.

Your skin is shedding all over the place.

What do you and a snake have in common? Unless you’re a lying, scheming, manipulative villain (which I’m sure you’re not), the answer is pretty simple: you both shed skin regularly. But that’s about where your skin-shedding similarities end. Why? Because a snake typically does this about 4 to 12 times a year and often leaves the shell of his old skin in one piece. Humans do this much faster, often shedding skin at a rate of 4 to 6 weeks per cycle. During this period, we completely replace skin all over the entire body.

We neither shed our old skin cells intact enough to leave a shell of our old bodies behind. Instead, our skin cells turn to dust as they leave our bodies falling off at an eye-popping rate of about 600,000 particles per hour. That’s about 1.5 pounds of skin being shed by our bodies every year. Imagine how much weight you can lose just by shedding some skin! Sure, shedding skin seems like something most people would rather not think about. However, it is also thankfully nearly invisible and, barring a nasty sunburn, pretty much painless.

Bugs are crawling all over (and inside) you.

There are few things in life that are genuinely creepy enough to make most of us cringe. Bugs, unfortunately, are one of them. As if their mere existence isn’t enough to send shivers down your spine, imagine having a host of them living on you and even inside you! Don’t want to? I don’t blame you. It’s difficult to reconcile the fact that these creatures have actually made your body into their habitat. While their existence, thankfully, isn’t something you can feel or in any way perceive, it doesn’t make it any less creepy to know that there are many of these creatures crawling all over you and have literally made your body their home.

Head lice, ringworms, and face mites are on the surface of your body, with head lice making their home in the maze of strands that is your hair. On the other hand, ringworms and face mites live on your skin and are practically invisible; you might not even know they are there, no matter how hard you look. Other creepy crawlies have made your insides their home. Creatures like tapeworms and parasites like giardia could exist inside your body. Some live there harmlessly, while others could cause problems like cramps, gas, and diarrhea. If you were looking for one more reason to observe proper hygiene, the idea of letting these creatures live in your body should be enough motivation to get you to at least wash your hands.

Your dreams push boundaries.

If you’ve ever woken up from a bizarre dream, you know that the imagination is at its most potent while we’re in sleep and in a dream state. Talking animals, flying cars, and architecture that defies physics — oh my! You can experience the resurrecting a loved one. Maybe you can go in the past and spend time with a friend. Basically, all things are possible in our dreams. And yet, scientists still haven’t been able to explain why our dreams are almost always strange, implausible, and out of this world, pushing the boundaries of what our imaginations are capable of creating.

Some theories explore the idea that dreams are an expanded state of consciousness beyond the limits of our usual linear thinking. This expanded realm helps loosen our normally constricted and rule-bound train of thought, allowing us to release our true thoughts and emotions. As our true selves are given free rein in our dreams, the control that our conscious brains impose is virtually non-existent, so while it is nice to have a fantastic dream or two, it’s not impossible to have the complete opposite and experience a creepy nightmare instead.

Your body makes the most disgusting noises.

The body is truly an amazing thing. Not only is it capable of so many complex functions and processes, but it is also quirky, contradictory, and sometimes downright bizarre. Of all the things that are strange about our body, one of the most disgusting (in a funny way) are the sounds it unconsciously makes as it goes about its daily business. We’re not just talking about farts and burps here, although they are definitely top of mind when we think of weird body noises. Many others, often unintended and out of control, are sure to draw out a giggle or two the minute you hear them.

Your nose and mouth area are commonly where most weird noises come from. A few examples are a loud series of sneezes, a few ill-time burps or belches, and a constant whistling in your nose as you breathe in and out. Your gut is also another likely culprit, responsible for a stretch of hiccups that comically escape your unwilling lips or send out a fart (smelly or not) in the other direction. It can even create its own sound as it rumbles on empty, sending out a low growl that is sure to make anyone laugh.

Your cells are dividing right this minute, and you can’t stop them.

Imagine your body at the cellular level. What do you see? Can you see your cells divide and form replicas of each other? Now zoom out and imagine how many of these replications are happening at a given moment. The scope and range of cell division in our body can be dizzying, yet this is exactly the process that keeps us alive. Cellular division is what drives our growth as humans and helps us heal from injuries and disease, no wonder you can’t willingly stop this process from happening. Your cells are dividing and will continue to divide inside your body whether you like it or not.

Your body replaces cells as they mutate or die. However, much like a photocopy of a photocopy, the replacements are always a little less perfect than the original. By the time you are around the age of 28, however, your body is no longer capable of replacing cells effectively. This means that at about that age, you are actively in the process of dying. Why? Because your cells get destroyed faster than your body can replace them. Each replacement is most likely substandard and of lesser quality than the cells whose places they took. It looks like it’s all downhill for your body once you hit your thirties.

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