As we say goodbye to 2010, many folks will start flocking to the gym to keep those "lose weight, get healthy" New Year’s resolutions.

To help those resolved to get moving in 2011, lululemon athletica, which sells yoga-inspired athletic apparel at its Ala Moana store, has partnered with local trainers and fitness instructors to offer a month’s worth of free classes.

The "31-Day Fitness Challenge" is geared toward people who are trying to find fitness solutions or branch out of their regular workout routines, organizers said. As an added incentive, lululemon athletica will provide goodie bags for people who attend the most classes. At the end of the month, drop off your class punch card to enter to win prizes. Cards can be picked up at the store and must be returned between Feb. 1 and 10.

A complete class list is available at lululemon athletica or can be downloaded at www.facebook.com/lululemonAlaMoana.

Here’s a sampling of some of the exercise and fitness offerings:

Aqua Jog Clinic: Light stretching followed by 45 minutes of aqua jogging provides a whole-body cardio workout without impact on the joints.

» Free session 5 to 6 p.m. Jan. 19 at Ala Moana Beach Park, Diamond Head end, led by Mariane Uehara. Regular classes are held at Kaimana Beach. Groups sessions cost $10; one-on-one sessions are $50. Call 397-8621.

CrossFit with Kimo: Barbells, kettle bells and medicine balls are among the props Kimo Kockelman uses in his high-intensity workout sessions. The varied workouts are designed so that "grandma and a top elite athlete can train side by side."

» Free classes at 8 a.m. or 3 p.m. Jan. 11 at Hardass Fitness, 432 Keawe St. Call 256-5665 or visit www.hardassfitness.com.

Nia in the Park: This exercise program, designed for all fitness levels, combines martial arts, dance and healing arts to create a cardiovascular workout. The class is done barefoot but shoes are optional.

» Free classes led by Sharlene Bliss from 5:30 to 6:30 p.m. Jan. 19 and 26 at Magic Island. Regular fee is $15. Call 291-1827.

Foam Rolling: Restore mobility at a "foam rolling" class. Using their own body weight, participants try to work the knots out of their muscles. Instructors say the technique can also reduce inflammation and muscle pain without a massage. Suitable for all fitness levels.

» 5:30 to 6:30 p.m. Thursdays at Applied Movement, 1258 Kamaile St. Free class led by Brad Bugado is Jan. 13; regular fee is $15 per class, or $10 with a monthly pass. Call 457-9834 or visit www.appliedmovement.com.

Pilates Mat Class: By the end of class you will have worked every muscle in your body, according to instructor Wainani Hansen. Props include resistance bands, balls, foam rollers and rings. Open to all fitness levels.

» Free classes will be held 8:15 and 9:30 a.m. Jan. 15 at On Balance Studios, 315 Uluniu St., Suite 201. Regular fee is $17 or $150 for 10 classes. Call 262-2528 or visit onbalancepilates.com.

Body Fit Boot Camp: Basic and advanced resistance training, speed-agility-quickness training and total strength and conditioning. Clients receive a nutrition guide and meal plan. Routines are changed on a regular basis; no two classes are the same.

» Free session led by Maria Bernardo at 7:30 or 8:30 a.m. Monday at Kapiolani Park. Classes are normally held at 8:30 a.m. Mondays, Wednesdays, Fridays and Saturdays and 5:15 p.m. Thursdays. Regular fee is $10 per class or $160 for a monthly pass. Call 426-8128 or visit www.fitnessatyourdoorhawaii.com.

Yoga Basics: Ideal for beginners and advanced students who want to explore more subtle aspects of yoga. According to instructors, participants will move through an array of hatha yoga postures intended to invigorate, revitalize and restore the body while calming the mind.

» Free class led by Heidi Hopkins Jan. 5 from 5:15 to 6:30 p.m. at Aloha Yoga Kula, 38 Kaneohe Bay Drive. Regular fee is $10. Park at Windward United Church of Christ. Call 772-3520 or visit www.alohayogakula.com.