An unusual upside-down workout has become the latest exercise trend in Australia.
Aerial yoga, also known as anti-gravity yoga, arrived in Australia about five years ago and has really taken off.
People taking part hang from the ceiling in a hammock and are encouraged to hold their body in a variety of positions.
Alana Chan, found of Yoga Pavilion in Sydney, said: "It looks graceful and effortless but it isn't. It takes quite a lot of strength."
Watch Martin's report to find out more.