January is the month when millions of people make an effort to revamp their health habits. Coincidentally, it's also the month when many variants of cold and flu viruses - including sinus infections causes by bacteria -- rear their ugly heads. Now may be the perfect time to take stock of your health habits and see if they could use some minor modifications.
Here's a countdown of the seven worst offenses:
7) Going to Work Sick. According to the Harvard Business Review, "presenteeism," or...


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