Sometimes even the most obvious questions require a scientific approach. You've probably heard that the average person swallows up to eight spiders in their sleep over the course of a lifetime. But is this true? If you are too lazy to search for an answer on your own, just read this article to discover the truth.
This article will give you the answer to some seemingly simple questions that puzzle even the most experienced researchers. For example, do you know why cats are afraid of water? Or how often you can find quicksand? If you're ready to learn something new, get comfortable and let me take you through.
Why do cats hate water?
One suggests that because the species evolved in dry climates and had little exposure to rivers or lakes, water (except for drinking) is an element they are unfamiliar with and thus avoid. More likely, however, cats don't like getting wet because of what water does to their fur.
Why do we close our eyes when eating a lemon?
We probably got this reflex from our ancestors. Our eyes are closed to prevent the sour lemon juice from getting into them, which might harm the mucous membranes.
Why don't our eyes get cold when it's freezing?
The eyes themselves and the tears that cover them are quite salty and so won't freeze until the temperature drops quite a long way. In addition, the eyes are mostly surrounded by nice warm flesh as well as bone with its good blood supply, both of which serve to maintain their temperature.
Why do we get a brain freeze when drinking cold water or eating cold food?
One theory is that the cold temporarily alters blood flow in your nervous system, causing a brief headache. Blood vessels constrict to prevent the loss of body heat and then relax again to let blood flow rise, resulting in a burst of pain that goes away once the body adapts to the temperature change.
Why do we have goose bumps?
The body hair of all mammals automatically stands up when cold, creating a fluffy layer of warmth. When we're cold, the muscles around the hair follicles contract – a reflex left over from when our ancestors had long body hair. But since we don't have much body hair, all we see are the goose bumps on our skin.
These are just a few among many different things one can think of.
Photo credits: Indiatimes.com, Live Science, Quora, The Brain Maze.
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