Arm soreness, lumbago and foot pain are considered to be excessive exercise, osteoporosis, rheumatoid arthritis and so on. 1. Excessive exercise: If you do a lot of heavy physical labor, or excessive aerobic exercise will cause muscle strain and lactic acid accumulation throughout the body, so there will be arm pain, back pain, foot pain and other symptoms. 2. Osteoporosis: osteoporosis is common in elderly patients, the beginning of no obvious symptoms, with the development of the disease will feel weak, and there will be symptoms of bone pain, mainly manifested as low back pain, may also appear in the whole body bone pain, bone pain is diffuse, there is no fixed pain points, symptoms worsened after exertion. 3. Rheumatoid arthritis: rheumatoid arthritis is mainly infected with group A beta-hemolytic streptococcus, most of which is caused by respiratory infections, starting with pharyngolaryngitis or tonsillitis and other illnesses, followed by wandering multiple arthritis, generally occurring in some of the larger joints. Sore arms, back pain, foot pain, there may be other causes, should be timely consultation, clear cause after standardized treatment.