Local running groups, playground-type workouts, outdoor cycling groups, and government-sponsored programs that fund fitness experts and programs to communities without access (including Shape Up NYC) replaced solo sweat sessions for many people, says Carol B. Espel, senior global director of group fitness and Pilates for Equinox Fitness Clubs. And more exercisers decided to get fit for a cause, participating in races, events, and classes that made calorie-burning charitable and fun.