Whether you work in an office cubicle or wait tables at a diner, there are some things that we all have done at one time or another that makes us look unprofessional.
You spend about a third of your day at work, so naturally, you interact with your co-workers a lot. Sometimes you even go out for a drink with them after work as well.
Talking about people behind their back is good for your health. Great! Just what some co-workers would love to hear.
It may be bad for your karma to say terrible things about people behind their backs . . . but it's GREAT for your health...