Why Cold Damp Weather Affects Joint Pain From a TCM point of view, cold and damp weather can invade the body and disrupt the flow of Qi (energy) and Blood in the joints. When this happens, the channels in the joints become blocked, leading to pain and stiffness. This condition is often described as Bi Syndrome , where external factors like Wind, Cold, and Dampness cause obstruction in the meridians. Cold causes the muscles and tendons to contract, reducing circulation and mak