Han Myint Mo kicks up a gold-coloured metal ball, pirouettes and catches it on the blade of a knife held in her teeth -- keeping up a Myanmar juggling tradition on the edge of extinction. The art form is thought to have begun in the early 19th century when performers at the royal court began juggling with balls made of blown, coloured glass -- known as "Ywal". But unlike conventional juggling, performers move the grapefruit-sized globes around their bodies using only the feet, knees, shoulders and elbows. IMAGES AND SOUNDBITES