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According to research by TotalJobs, one in five office mugs contains fecal matter.

After letting that sink in, a common question is to ask how such a thing made its way into a break room. Well, according to Mirror reports, studies indicate that 25 percent of people don't wash their hands after using restrooms at work and cross-contamination quickly spreads throughout facilities.

The recruitment company reached out to hygiene expert Dr. Lisa Ackerley to get her advice on how to deal with germy coffee breaks. Ackerley's advice: Bring your own meg and/or water bottle. And don't leave mugs or water bottles out overnight.

Water is not sterile, Ackerley said, and bacteria will build up overnight.

And the nastiness doesn't stop with mugs. According to the TotalJobs study, the average office desk has up to 400 times more bacteria than a toilet seat.

People who eat at their desks are most at risk of picking up bacteria, followed by people who chew their pens and those who bite their nails, the article said.

Ackerley advises using a hand gel or antibacterial wipes before eating anything at your desk — or better yet - take your break or lunch someplace else.

Good advice, but all the germs aren't on the desks. In fact, the seven germiest places in the office are:
1. Keyboards
2. Doorknobs
3. Faucet handles
4. The refrigerator handle
5. Kitchen sponges
6. Anything else people are touching all the time
7. The air