Sore legs after waking up may be related to cold, leg pressure and rheumatism rheumatoid arthritis and other reasons. Hot weather in the sleeping fan or air conditioning legs cooled, resulting in leg vasoconstriction, blood circulation slows down, after waking up in the legs will appear sore symptoms, most of the joints at the soreness is more obvious. Sleeping on a hard bed or sleeping on a hard cooler, the legs are compressed for a long period of time, after waking up there will be symptoms of pain and soreness, generally appropriate activities or massage will be able to relieve. If you have rheumatoid arthritis or ankylosing spondylitis, you will have sore legs after waking up. Most of them are accompanied by stiffness in the legs, which can be partially relieved after appropriate activities. If you have leg pain after waking up, it is recommended that you go to the hospital for a complete examination and receive regular treatment.