1. Frozen shoulder is a common joint condition that causes shoulder pain and limited movement. Arthritis is an inflammatory disease of the joints that causes pain, swelling and limited movement. If you have frozen shoulder or arthritis, you may not be able to lift your arms when you perform exercises such as square dancing.
2, muscle fatigue: prolonged square dancing and other sports may lead to muscle fatigue, the muscles will produce lactic acid buildup, which causes the symptoms of arm lifting.