世人都说:人老腿先老。为什么人老最早反映在腿上呢?腿中有人体中最大最长而且最结实的关节和骨骼,它们能够一次连续几个小时承受比人的体重大几倍的压力。人过了30岁以后,由于心脏的供血能力衰退,因而供给小腿和脚部肌肉的氧会减少,与此同时,由于人体钙吸收利用的能力降低,导致腿骨软化、萎缩,坚韧性也逐渐降低。专家们认为这种情况并非无可挽救,只要坚持锻炼,腿脚老化的速度可得到明显的减慢。不仅如此,有些日本学者还把脚视为“第二心脏”,因为步行可以帮助把 The world says: people old legs first. Why is the earliest person to be reflected in the legs? The legs have the largest, longest and most powerful joints and bones in the body that can withstand several times the weight of a person for several hours at a time. After 30 years of age, the oxygen supply to the lower leg and leg muscles is reduced due to the decline of the blood supply capacity of the heart, and at the same time, the capacity of calcium absorption and utilization of the human body is reduced, resulting in the softening, shrinking, and tenacity of leg bones reduce. Experts believe that this situation is not irremediable, as long as the exercise, the rate of aging legs and legs can be significantly slowed down. Not only that, some Japanese scholars also regard their feet as “second heart” because walking can help