when resting or going to sleep, why does it feel like bliss when you switch positions, but then a minute later it is uncomfortable again?

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when resting or going to sleep, why does it feel like bliss when you switch positions, but then a minute later it is uncomfortable again?

In: Biology

It’s about the structure of your skeleton, and blood circulation.

Your legs and feet are really good at carrying the weight of your torso. And they’re built to handle that weight, and also prevent blood from pooling down there because of gravity.

When you lay down, some part of your body other than your legs is taking the weight of your torso. That means it’s getting squeezed, maybe put in an awkward position, and you might be constricting the blood flow to that area. (Blood pooling isn’t really an issue, because when you’re laying down, your heart isn’t as far above other body parts as when you’re standing.)

But some part of your body is still taking a lot more weight when you’re laying down, depending on the position. Eventually, fatigue, or inadequate blood-flow, will set in. So, it also feels amazing when that pressure gets relieved after a while.

This is also why people tend to change positions every 60-90 minutes when they’re sleeping. It’s a deep instinct, so you don’t accidentally pinch a major blood vessel in your arm for 8 hours, and then wake up with a dead finger or something.