Normal
It's about balance and aerobic capacity. Standing allow you to be a human suspension and to go faster over rough terrain. However, it's tough and takes a lot more energy than sitting. In slow going technical stuff sitting gives a lower center of gravity. That can help you negotiate the trail. I stand as much as I can, but eventually I have to sit and rest.One other factor is the seats that are on current bikes. They resemble a 2x4 with a vinyl cover. Not exactly made for sitting. By comparison my XR is an overstuffed couch.
It's about balance and aerobic capacity. Standing allow you to be a human suspension and to go faster over rough terrain. However, it's tough and takes a lot more energy than sitting. In slow going technical stuff sitting gives a lower center of gravity. That can help you negotiate the trail. I stand as much as I can, but eventually I have to sit and rest.
One other factor is the seats that are on current bikes. They resemble a 2x4 with a vinyl cover. Not exactly made for sitting. By comparison my XR is an overstuffed couch.