When the required course of PE in the university is end, most of the students don't take part in aerobic metabolism exercise, and there is a marked drop in function of the heart and lungs.
随着体育必修课结束，大学生参加有氧代谢运动的人次明显减少，心肺机能水平随之显著下降。
During aerobic exercise, glycogen is broken down into glucose. In its absence, fat metabolism is initiated.
糖原，在有氧运动过程中，被分解成葡萄糖。由于它的存在，脂肪代谢开始。
Aerobic exercise may not build big muscles, but it can rev up your metabolism in the hours after a workout.
有氧运动虽然不能塑造大肌肉群，但能提高运动后几个小时内的代谢速度。
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