Doctors explain that poor sleeping posture affects circulation and nerve function. Over time, this can result in inflammation or pressure on the nerves in the wrist and arm — similar to what happens with carpal tunnel syndrome. People who experience frequent swelling should also consider whether they are sleeping in overly cold or humid environments, which can worsen the symptoms.

To avoid these painful and uncomfortable effects, health professionals recommend sleeping on your back or side with your arms in a relaxed position. Using a supportive pillow and maintaining proper body alignment can help improve blood circulation during sleep. Gentle stretching before bed and after waking up may also reduce stiffness and swelling.

While occasional swelling might not be serious, repeated symptoms should never be ignored. Persistent numbness, pain, or discoloration can indicate an underlying condition that requires medical attention. Taking care of your sleeping habits is one of the simplest yet most effective ways to protect your health — and to wake up feeling truly rested and pain-free. Read more below