ERIKA SCHULTZ / THE SEATTLE TIMES
Colleen Compton laughs while talking with participants Monday at the Arthritis and Injury Water Aerobics class at the Dale Turner Family YMCA. The class is designed for people who have limitations when it comes to traditional exercise. Many participants attend classes before hip or knee replacements to prepare for the surgery, said instructor Janet Kavadas. Compton said she was looking forward to warmer weather forecast later this week. "I love warm weather," she said. "It's healing. It makes you happy."