Belly dancing has a reputation for theatrics and seduction, but its rhythmic isolations of the hips, abdomen, chest, shoulders, arms and back make for a surprisingly low-impact workout. “It uses all the core muscles of the body with minimal effort on the joints, so it's perfect for people of all ages or those who have sports-related injuries,” according to Zinia Rahman, instructor at NYC Belly Dance. Belly dancing is also a great way to strengthen the muscles in your back, minimizing lower back pain, she says. To get started, all you need is some music and a scarf to tie around your hips. “Stand comfortably in front of a mirror and move your hips, shoulders, arms and chest in as many different ways as possible, one by one,” Rahman says. “Just relax and shimmy!” Look for a class at your local gym or dance studio or pop in a DVD.