SYDNEY, AUSTRALIA – FEBRUARY 04: A client exercises in a pool at the NuYu Weight Loss Retreat on February 4, 2010 in the Hawkesbury Valley near Sydney, Australia. Nuyu is a live-in style retreat offering programs that run for up to 6 weeks addressing all aspects of healthy living including exercise, meal planning, emotional well being and boast a 80% success rate for long term weight management.The latest statistics from the Dietitians Association of Australia state that 62% – more than 13 million Australian adults – and 25% of Australian children are overweight or obese. (Photo by Lisa Maree Williams/Getty Images)