Petra may be the "Nail Whisperer," but at the end of a work day my nails look like a five year-old's. Probably because I have to try every nail polish that comes my way on a different finger. Glittery ...

We spend at least eight hours a day sitting in front of our office desks — so no surprise we often think of them as extensions of our house. But if that's how you're thinking, it's time to think again ...