For the second time in his childhood, Behan was back in a wheelchair, this time not just having to learn how to walk again but how to eat and make the simplest movements. Again, the medics said ‘it’s over’; again, he went back to the gym. Only this time, just to spend hour upon hour trying to retrain his brain, to regain hand-eye coordination like throwing a ball against a wall and catching the rebound. Some days, he could not even manage that.