The boundless end of the world is my love, Flowers are blooming at the foot of the continuous green mountains…] Every time I hear such music, Grandma Liu always dances to the dynamic rhythm involuntarily. Square dancing is a popular aerobic exercise. It can not only exercise [big] muscles in arms and thighs, It can also enhance cardiopulmonary function. As long as there is an open space with divine comedy, Grandma Liu and her old sisters will jump up without thunder. However, you can take it easy, Grandma Liu, be careful of your knees! Knees should be saved from using a layer of articular cartilage on the bone surface of the knee joint. It is like putting a [safety helmet] Read More …