A competitor prepares to go in front of judges at a casting call for the second season of the reality television programme "Dance Your Ass Off", during which overweight or obese contestants hope to lose weight by dancing, in New York December 18, 2009. As healthcare costs in such heavyweight nations as the United States and heavy-smoking locations as Dundee keep rising, and as governments move to cut huge budget deficits, hundreds of local authorities, employers and health insurers - even the occasional former investment banker - are dabbling with health incentive schemes. The idea is simple: pay people to act now and governments will reap the rewards later in lower healthcare costs. Statistically speaking, people who shun harmful habits are more productive and have less need for expensive hospitals, doctors and medicines. Picture taken December 18, 2009. To match Special Report HEALTH-INCENTIVES/ REUTERS/Finbarr O'Reilly/Files (UNITED KINGDOM - Tags: HEALTH SOCIETY BUSINESS)