Australian Bette Calman, 83, is a living proof that yoga can take off couple of decades from your age:
"While others her age complain about aches and pains, Mrs Calman focuses on getting touch balancing manoeuvres right. Mrs Calman from Williamston, southeast Australia, can do all the difficult moves including the agonising "peacock" where body is held in a horizontal position by the strength of the arms alone. The bendy granny can also pull off a tricky raised "lotus", "bridge" and a headstand with ease. She can also put her head between her knees and hold her ankles putting her inflexible grandchildren to shame."
HAHAH! She's my idol!