If you work at a desk, you probably already know that it can cause major back pain . Thankfully, there are a number of things you can do to prevent that pain from kicking into high gear, like adding a lumbar pillow and a seat cushion to your chair. Right now, Everlasting Comfort’s Memory Foam Seat Cushion is 40 percent off on Amazon. Keep reading to find out why more than 84,000 shoppers have given it a five-star rating. This cushion can be placed on the seat of your chair to give you a little