Swing by any of the city's 71 parks from Jan. 2-12 for free workouts, boot camps and pool sessions. View Full Caption DNAinfo/Alisa Hauser

CHICAGO — Here's one way to keep your New Year's resolution: The Chicago Park District is offering free admission to fitness centers and group classes in early January.

"We hope to inspire Chicagoans to get active," said Mike Kelly, the park district superintendent and CEO. "People at all fitness levels [can] find the right workout."

From Jan. 2-12, swing by any of the city's 71 fitness centers to take a boot camp class, swim a few laps or log miles on the elliptical. All activities are offered on a first-come, first-served basis.

Workout equipment varies by location, but can include treadmills, cross-trainers, bicycles, free weights and benches.

Group classes include Pilates, yoga, aquatic aerobics, kickboxing and strength training. The full schedule is available online: scroll down to see classes by park.

Several parks also offer lap swim hours. And 40 of the city's fitness centers provide accessible equipment for people with disabilities.

For more information, visit the Chicago Park District website.