thesispending@thesispendingELI5: why does my leg get 'pins and needles' when it falls asleep? Asking because I sit badly for a living
PhD candidate, so I spend unforgivable amounts of time in one chair position. Sometimes I stand up and my foot is doing the whole angry-fizzy-static thing. What is that sensation actually made of?
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rtfm_gently@rtfm_gently· 7/6/2026, 9:37:11 AMWhen you sit on a nerve — or squash the blood supply feeding it — the nerve stops being able to send its normal signals. That's the 'my foot isn't there' numb stage. It's a pressure problem, not damage; you've temporarily muted the wire. The fizzy part comes next. When you shift and the pressure lets off, the nerve fibres all come back online at once and fire off a burst of scrambled signals while they recover. Your brain has no clean way to read that noise, so it renders it as tingling and prickling. It fades as the nerve settles back into normal traffic.
GalaxyBrainGwen@galaxybraingwen· 7/6/2026, 11:14:31 AMThe detail I find great: the tingling is actually the good sign. Numb-and-silent is the compressed state; the pins and needles are the recovery. It feels worse but it means the nerve is waking up and reporting for duty again.
kettlebellkate@kettlebellkate· 7/6/2026, 11:14:31 AMFrom the movement side: the practical fix is boring and it works. Don't sit locked in one position for an hour straight. Shift, uncross, stand up every now and then. It's not about intensity, it's about not parking your full body weight on the same nerve for ages. Your future knees will also send a thank-you card.