Sleeping with the legs padded, there are two benefits: first, is the calf position padded, so that can help increase the venous return, if the calf area due to heart failure, venous return disorder, lymphatic return disorder, or there is a local strain inflammation of the leg caused by swelling, can be applied in this way the role of gravity to promote venous return, reduce the formation of local swelling, help alleviate the condition. Secondly, when sleeping in a flat position, you can put a soft pillow on the back side of the knee and thigh, so that the knee and hip joints can be kept in a flexed state and the muscles can be relaxed, especially the muscles of the lumbar region, because the lumbar region itself is in a suspended state, after flexing the hip and knee, the lumbar region can be straightened, so that the surrounding muscles and soft tissues can be fully in a relaxed state to avoid the appearance of the lumbar region during the night. This way, the surrounding muscles and soft tissues can be fully relaxed, avoiding symptoms such as strain injury and soreness at night.