Originally Posted by phughes

When you are slightly leaned forward, you take the weight off your rear, and the bumps do not jolt your spine. It also takes pressure off your lower back. If your bike is set up correctly, the seat setback is correct for you, you should be balanced on the bike, with little to no weight on your hands, which also takes weight and pressure off your arms and shoulders.

Originally Posted by Thulsadoom

I suspect some would disagree with that.