I see people riding all over God's creation and I try to ride in my neighborhood (4 to 5 miles), when I finish my lower spine (Butt bone to be exact) is killing me. I have a Back Trails seat pad and also padded riding pants (I haven't worn the pants with the seat pad yet). Is there some secret to what looks like torture to me, with these people riding all over the place. I have a Schwinn Ranger mountain bike with a stock seat. I just got it today for Christmas, but I have been riding a little bit on my son's mountain bike before I got mine with the same results. Thanks.