kneeling on the seat while riding — stuff I would never try at home (and don’t recommend you try at home either).
n, when you put your hands on the handlebars, you form a sort-of pyramid — very sturdy. To steer the bike, you use your knees, by gripping the fuel tank and leaning the bike where you want it to go, with your arms and hands guiding the front wheel.
track, up-and-down dirt hills; slow turns around corners; over simulated road ruts; through tight serpentines; up steeper hills (and down the other side — not as easy as it sounds with the back wheel of the 275-kg bike skidding on loose dirt).