It was one of my biggest takeaways from the skills clinic I took two years ago. On my first post-clinic ride, I got out of the saddle on an early section of the trail that, at the time, freaked me put and was amazed by the difference. So, I became a believer from the start. Plus, I find it to make my rides more fun. Even with a FS bike, I don't like feeling beat up bike sitting too much.