No matter how much you wash your hands, emotions are contagious. Seeing someone cry often sparks a sadness in others. A baby’s laughter spreads so easily. Negativity is just as easy to spread, unfortunately. We’ve all been there: a co-worker is constantly negative, complaining, and all around miserable, no matter the situation. As hard as you try to avoid it, that person is likely to bring you and others down too. While we have likely all experienced something like this both at work and in our personal lives, the good news is that positivity is also contagious.