When most people picture Taijiquan, better known as Tai Chi (太极拳), two contrasting images tend to come to mind. One is the slow-moving routine practised by elderly people in parks in the early morning ...

Your keys aren't in the spot you thought you left them? Can't recall the title of a book? I've had those moments. Amid our busy lives, distraction or fatigue may explain our forgetfulness. But ...