It's perhaps the news that lazy pho

It's perhaps the news that lazy phone users have been dreaming of for a long time. Researchers have found that lying on your side and holding your phone is the best posture to avoid pain and problems in the upper back and arms. Writing in the International Journal of Human Factors and Ergonomics, a team from South Korea found whether phone use while sitting, lying on one's back or lying on one's side was more or less likely to lead to problems of the musculoskeletal system (肌肉骨骼系统). The team invited thirty healthy young adults and asked them to type on a smart phone for five minutes at a time and to have a five-minute rest. They used electromyography (肌电图描记法) to measure muscle response (测量肌肉反应) in different postures. Different muscles were more active in different positions but were highest in the sitting position. Using the phone while lying on one's side showed the least muscular activity. So the team says phone users will be more comfortable and suffer less from problems of the upper musculoskeletal system if they lie on their sides while using their phones. The next step, of course, will be to persuade (说服) phone users to not use the phones while walking.