According to the Mayo Clinic, we sit for 10 hours a day. And that not only slows our metabolism to a crawl – and raises our risk for blood clots – it makes our rear-ends bigger. In fact, when we sit for too long, it causes the soft tissue in the behind to spread out in 3 directions! Imagine squishing play-doh with your palm, and you get the gist. And when the cells in your rear have all that pressure put on them, they respond by generating more lipids – also known as fat! So things get even bigger back there. To avoid getting more junk in your trunk, stand up and move every hour for at least 2 minutes.