What can it be when you wake up and your arms feel nume?

* Sleeping position: If you sleep with your arms bent or under your head, it can put pressure on your nerves and cause numbness. Try sleeping with your arms at your sides or use a pillow to support them.

* Repetitive motions: If you do a lot of repetitive motions with your arms, such as typing, writing, or playing an instrument, it can strain your muscles and nerves and cause numbness. Take frequent breaks and stretch your arms to help prevent numbness.

* Medical conditions: Certain medical conditions, such as diabetes, carpal tunnel syndrome, and cervical stenosis, can cause numbness in the arms. If you have numbness in your arms that doesn't go away, it's important to see a doctor to rule out any underlying medical conditions.