Crossing your arms when injured can reduce pain

　　When an elderly person is injured, crossing his arms can relieve pain. This has been scientifically proven. Everyone can try it.

　　Crossing your hands is often a defensive gesture in social interactions, but now scientists have discovered a new use for it: relieving pain. A new British study published in the journal Pain found that crossing your arms can help reduce pain after a hand burn or injury. Scientists have discovered that when pain occurs, crossing one's arms can "fuzz" the brain and reduce pain. This effect has the greatest impact on hand pain.

　　University College London Physiology Pharmacology & nerve Scientists from the Department of Science used laser light once every 4 milliseconds to conduct a pain stimulation test on the hands of eight participants. The test was then repeated with the participants crossing their arms in front of their chest. The participants recorded their pain levels, and the researchers also used EEG scanning technology to measure the participants' brain responses. The results showed that when the participants crossed their arms, the pain was significantly weaker, reducing by 3%.

　　Dr. Giandomenico Iannetti, the leader of the new study, said that when you are injured, rubbing the affected area can help relieve pain, and crossing your arms on your chest can also help relieve pain. In daily life, in most cases, people always use their left hand to touch things on the left side of the body, and their right hand to touch things on the right side of the body. For example, if the water glass is on the left, they use their left hand, and if the water glass is on the right, they use their right hand. This means that parts of the brain responsible for spatial activity on the right side of the body and on the right side of the body are often activated at the same time, allowing them to process sensory stimuli effectively. When the left and right arms are crossed in front of the chest, the brain areas responsible for the right half of the body and the right space are not activated at the same time, so the brain's processing of sensory stimuli, including pain, is no longer so effective, that is, the pain sensation will be weakened.