Winter smog killing knife, should go out to exercise caution

Heavy fog affects not only the traffic, but also to go out to exercise the person who makes no small trouble. Remind health care workers, low pressure fog, hypertension, coronary heart disease should not be strenuous exercise, avoid-induced angina, heart failure. More appropriate to note that early in the morning at the movement in the dense forest, the trees at night due to the release of ...Winter smog killing knife, should go out to exercise caution