题目内容：

    Getting up in a cold winter morning is even a difficult thing to do and doing some exercise outdoors seems a tough task. 1. . People who run outdoors simply need to dress in the appropriate clothing.

Running in the cold actually helps burn more calories compared to the same activity done indoors. Cold weather basically requires the body to work harder to achieve perfect temperature for efficient functioning.

Cold winter weather is a common excuse for people to get lazy and stay indoors. Some people also eat a whole lot when it’s cold outside. 2.. With these, the body’s metabolism(新陈代谢) will also slow down and eventually result in weight gain. When running is done, possible weight gain may be prevented.

3. When the temperatures are freezing and low, the body’s metabolism will also slow down and the only way to promote blood circulation is to do some exercise like running.

Having depression or a sad mood is common during the winter months. 4.  Doing some running will also help to lift spirits up and make people happier.

Running activities basically help the body become healthy and strong regardless of indoors or outdoors. The additional thing is that the body needs extra work to knock back the freezing temperatures. 5..

A.Good blood circulation promotes metabolism

B.Running outdoors is also good exercise for the heart

C.With this, people will not only become healthier but also happier

D.The changes lead to people feeling down during the cold winter months

E.However, running outdoors in winter may actually provide various benefits

F.Other people meanwhile tend to watch TV all day or sleep for longer periods

G.These feelings are regarded as a common phenomenon with those living in the north