Work tired, sleep at night hand numbness how? Tired of working during the day, when sleeping at night, sometimes the phenomenon of numbness, there may be the following reasons: First, the most common reason is that the patient may have cervical spondylosis, cervical spondylosis patients due to cervical spondylotic hyperplasia compression of the nerves, during the day in the work of the time if the force is not appropriate, or work for too long, or too much force, it will make the original cervical spondylosis aggravated. Therefore, when sleeping at night, the phenomenon of hand numbness is easy to appear. Secondly, it may be some symptoms that the patient’s peripheral nerves are compressed, especially the ulnar nerve and radial nerve. Improper exertion in the process of exertion will lead to nerve compression, so the phenomenon of hand numbness.