(一)久坐伤肌。长期坐着不动,容易发生肌纤维萎缩,肌肉力量减弱,使人消瘦无力;长年累月坐着工作的人,大脑皮层过于疲劳,可致内脏神经功能降低,对胃肠道的调节失灵,使肠壁肌肉蠕动减慢,肠道内代谢产物易在结肠内滞留,这些产物中的某些有害物质较长时间刺激肠粘膜;盆腔及 (A) sedentary muscle. Long-term sitting motionless, prone to muscle fiber atrophy, muscle weakness, people lose weight; sitting for many years working people, the cerebral cortex is too tired, can cause reduced visceral nerve function, the regulation of the gastrointestinal tract failure, the intestinal wall Slow muscle movement, intestinal metabolites easily stagnate in the colon, some of these products in the long-term stimulation of intestinal mucosa; pelvic and