If you work in an office like most humans these days, you probably spend a large portion of your day at a desk. This means you can be sitting for hours and hours throughout the day which can be uncomfortable if you don't have the right computer chair or posture. I was pleased to contribute to this Ultimate Guide to Ergonomic Workstations along with 14 other health and fitness pros to explain the best tools for your office and the best ways to maintain great posture throughout your day. Get all 15 tips here.