Even if you are not prepared to work up a sweat three times a week, any activity is better than none.
即使你不准备1周流3次汗，任何活动总比没有要好。
Well, here's another reason to work up a sweat: Exercise tightens the skin on your entire body.
还有个足够让你运动到大汗淋漓的原因：运动能拉紧整个身体的皮肤。
'Even if you don't feel like it, try to work up a sweat with exercise - it helps remove dirt and unclog pores.
即使你没心情，也要试着做锻炼出出汗，这样能排除垃圾，使毛孔畅通。
Keep in mind, too, that stop-and-go activities, such as mixing walking with running, can make you more vulnerable to the cold if you repeatedly work up a sweat and then get chilly.
也请谨记，动动停停的活动，比如走跑结合，反复地上一身汗然后冷却会使你面对寒冷更加脆弱。
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