What correlation is between the changing in weather, for example, it starts raining and the pain in legs?

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What correlation is between the changing in weather, for example, it starts raining and the pain in legs?

In: Biology

Changes in barometric pressure occur with changes in weather. These changes of pressure can cause muscles, tendons and such to expand, causing pain by pressing against nerves.

Barometric pressure is the pressure of earths atmosphere. Its the attraction of gasses to the surface by gravity and changes of tempreture and gas composition.

Copy pasted from WebMD:

“Possible Causes

One puts the blame on barometric pressure, a measurement of the [weight](https://www.webmd.com/diet/obesity/healthy-weight) of the air. When a cold front moves in, barometric pressure usually drops. So there’s less pressure on your body from the air. This may make your tendons, muscles, joints, or scar tissue swell, leading to pain.
No matter what the temperature, changes in barometric pressure make some people hurt more. That’s especially true when it changes quickly. High humidity (moisture in the air) plays a role, too.
Another idea is that the fluid in your joints, called synovial fluid, gets thicker in cold temperatures. This could make your joints stiffer and more painful.

In cold weather, some of your [blood](https://www.webmd.com/heart/anatomy-picture-of-blood) gets routed away from your arms and legs to vital organs like your [heart](https://www.webmd.com/heart/picture-of-the-heart) and [lungs](https://www.webmd.com/lung/picture-of-the-lungs). This is your body’s effort to keep them warm. But it takes warmth away from your joints, which can make them achier.
The cold also makes your muscles tighten up. This makes you less flexible, which means you’re more likely to get sore or injured.”

**TL;DR:** No one knows if it’s even a thing or just imaginary, but some have educated guesses.