许多中年人未老先衰。让他们弯腰擦洗澡盆,捡起掉在地上的物体或从矮小的床头柜里取东西,确实十分费劲。这是由于他们的脊柱柔韧性不好所造成的。有些人因受髋关节灵活性的限制,如果无外来帮助,他们就很难登上较高的台阶,如乘公共汽车。关节灵活性差的人,如果不引起注意,那么天长日久就会发展成为这种或那种畸形病症。因此,关节也要象肌肉一样,坚持加强锻炼。下面的练习不仅能够发展和加强关节的灵活性,而且 Many middle-aged people are not old before they fail. Getting them to bend over the tub, pick up objects falling from the floor, or take things from the little bedside cupboard is really strenuous. This is due to the poor flexibility of their spine. Because of the limited flexibility of the hip, some people find it hard to climb higher without any help, such as by bus. People with poor joint mobility, if they do not notice, develop into one or other deformity over time. Therefore, the joints should be like muscles, insist on strengthening exercise. The following exercises not only develop and enhance joint flexibility, but also