“Hours on an elliptical machine might work for some fitness gurus, but belly dancing is the best way to stay healthy this summer for 15-year-old Beth Pessoa. ‘It's different, but it's really fun and a good workout,’ she said. ‘There's a lot of moving your hips, and your stomach and sides start to burn after a while.’ Pessoa discovered the routine because of a free membership offered by Butterfly Life Women's Fitness Center in Janesville to teenage girls this summer. The center is just one of the ways for teens and kids to stay active. Wisconsin's percentage of obese and overweight children (10-17) is actually lower than 38 other states and Washington, D.C., according to a report released Wednesday by Trust for America's Health and the Robert Wood Johnson Foundation. But Rock County Health Officer Karen Cain said developing healthy habits early in life creates a better chance at continuing that lifestyle. Offering free summer memberships was a small way of contributing to that effort, said Bonnie Smith, owner of Butterfly Life. ‘I think it's something we really needed in the community, and we can offer something different than just going out and running around on their own,’ she said.