What is the reason why hands and feet are easily numb?

Several possibilities are 1, and the blood vessels are blocked. Holding a posture for a long time will compress blood vessels, which will hinder blood circulation. 2. Low temperature. Being cold for a long time leads to blocked blood circulation. 3. Vascular embolism, blood circulation blocked 4. Cerebral hemorrhage or pathological changes, nerve compression 5. Cervical spondylosis, nerve compression 6. Nerves are highly excited or depressed by emotions.