Feared and dismissed in equal proportion, the yips were once endowed with an almost mythical status. Previously an ailment exclusive to golfers, in recent years participants from sports as varied as snooker and basketball have been diagnosed with the condition. While the cause is still hotly debated there’s no doubting its existence and the term is so regularly used that it often gets erroneously ascribed. So what exactly are the yips? And are they really to be feared?