安全的锻炼方式———步行步行是一种等张力运动，腿及臂持续的运动能促使血管弹性的增加。特别是腿的持续运动，可促使更多的血液回到心脏，有利于改善血液循环，提高心脏的工作效率。步行锻炼有利于精神放松，减少忧郁与压抑情绪，并可以提高人体免疫力，若每晚睡前都能... Safe exercise - walking is an isometric exercise, leg and arm sustained exercise can promote increased blood vessel elasticity. In particular, the continued movement of the legs, can promote more blood back to the heart, help to improve blood circulation and improve the work efficiency of the heart. Walking exercise is conducive to mental relaxation, reduce depression and depression, and can improve human immunity, if every night before bed can ...