Nik Mackey
“Don’t look down,” comes the exhortation from somewhere on the floor. "Look ahead." I am testing out a new bit of kit, a large wooden cylinder encased in a metal frame, suspended via ropes and pulleys from a high ceiling. The diameter is big enough for me to be able to stand up and walk. Or not. The inclination is to watch your feet as, like a hamster, you power the rotation of the drum. Trouble is if you look down you lose your balance. So I look ahead and take grandmother’s footsteps which are barely strong enough to get the thing moving at all. "Take bigger strides," comes more advice. But it's no use.