10 Common Phenomena Explained

This article gives answers to how ten everyday things work. These are some interesting facts to know, and you can surely use them to impress your friends. Some examples of what's explained are sunscreen, joint cracks, freckles, hiccups, and the falling sensation that some get while lying in bed. Below is an excerpt from the section about the falling sensation:

Have you ever woken up to a falling sensation and a strong muscle twitch as you are simply lying in bed? This phenomenon is known as hypnagogic myoclonic twitch or “Hypnic Jerk,” and studies have shown that roughly 70% of people have experienced it. There is no definitive answer on why this happens, but most scientists have agreed on the following explanation. When you are falling asleep your muscles become very relaxed and enter what is essentially a state of temporary paralysis. While your body is making this transition the brain can misinterpret the sudden relaxation of the muscles and instead think that you are falling. Instincts kick in and send signals to your muscles to jerk you upright which leads to a rude awakening. Studies have found that “Hypnic Jerks” occur more frequently with people who suffer from sleep anxiety, fatigue and discomfort because the brain is more easily confused. Either way, it is a normal part of the sleep process and poses no real danger.


From the Upcoming ueue, submitted by Snappy.

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Holy crap! I was just about to ask someone about this, because this happens to me all the freakin' time, and I thought there might be something wrong with me. I guess not, haha. Cool.
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I only had that once, when I woke up to a nightmare to a sitting up pose, realized it was just a dream that threw my head back down onto the pillow. I then felt like my bed fell through the floor, and having known I was awake it freaked me out.
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