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人体的肌肉大部分附在四肢、胸、腰、背的骨骼上。由于肌肉的收缩产生力量,人体才挥洒自如,显得精神,浑身有劲。如果肌肉松弛,骨质疏松,关节僵硬,四肢曲伸不利,全身行动迟缓,就是一副衰老的样子。据科学家论证,人到50岁以后如果不坚持体育锻炼,肌肉就出现萎缩。30岁的男性肌肉
Most of the body’s muscles attached to the limbs, chest, waist, back of the bones. Due to muscle contraction produce power, the human body can sway freely, appear spirit, whole body is strong. If the muscles loose, osteoporosis, joint stiffness, limb flexion adverse, slow body movement, is a look of aging. According to scientists argue that people do not adhere to physical exercise after the age of 50, the muscle shrinks. 30 year old male muscle