1 . Winter is often quite cold, which often makes us stay indoors more instead of heading out to exercise. Worse still, there are many viruses(病毒) doing their best to make you sick. And sneezing, coughing and nose blowing make the rooms a habitat for viruses.     1    Touching a doorknob or shaking a hand may make you get sick. Although it may sound terrible, there are still some things you can do to avoid viruses. Here are several simple tips to stay healthy in winters.

Wash your hands. You pick up viruses everywhere and they live on your hands, so wash your hands and do it often.     2    . But if that’s not available, use an alcohol-based hand sanitizer (消毒杀菌剂).

    3    :Avoid touching your eyes, nose and mouth with your hands. That’s one way viruses can get into your body.

Get the flu shot(疫苗).     4    , but getting the flu shot lowers your chances of getting the flu. For example, getting the flu shot last year resulted in a 34% lower risk of coming down with the flu.

Avoid sick people.     5     Viruses spread very easily through the air, so keep at least six feet between you and the sneezing, sniffling and coughing person.