Why Your Arms Go Numb When You Sleep and How to Stop It

Most of us have experienced waking up in the middle of the night, only to realize that our arm or hand has gone numb or has “fallen asleep.” Sometimes, we also feel a prickling sensation, as if tiny “pins and needles” are piercing through our skin. The medical term for this is paresthesia, but why does this happen, and is it something that we should be concerned about?

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