STRETCHING your leg behind you before reaching back to catch hold of your foot is hard enough -- but just try doing it upside down.
This is only one challenge of the latest US fitness fad -- upside-down yoga. Devotees of the system are dedicated to getting hung up over exercise -- literally. Anti-gravity yoga is the darling of US fitness chain Crunch (which gets a regular cameo role in the Sex And The City series). The unorthodox gym company is also responsible for exercise initiatives such as pole-dancing, pogo-hopping and sword-training.