MAY 20

Shape Up NYC -- Glutes in Gear: Build endurance through cardio, then work your abs and glutes. 6-7 p.m., FREE. Prospect Park Audubon Center, Lincoln Road/Ocean Avenue entrance. Info: 718-287-3400

Ironstrength: Special workout on the roof of Equinox with Sierra Nevada. 7-9 p.m., FREE. 330 E. First St. Info and RSVP: Drjordanmetzl.com

MAY 21

Bryant Park Tai Chi: Led by CK Chu Tai Chi. 7:30-8:30 a.m., FREE. Fountain Terrace, Sixth Avenue and 41st Street. Info: 212-768-4242

Yoga at Morris-Jumel Mansion: Vinyasa Flow-style, moderate class. 1-2 p.m., FREE ($5 suggested donation). 65 Jumel Terrace. Info: 212-923-8008

Bryant Park Yoga: Presented by Athleta. Mats provided. 6-7 p.m., FREE. Upper Terrace in Bryant Park. RSVP: Yoga.bryantpark.org

Ailey Barre: Get the classic "Ailey body" at this barre class, designed to develop long, lean muscles. 6-7 p.m., $18.50. Ailey Extension, 405 W. 55th St. Info and registration: Alvinailey.org

Nurturing the Nurturer: Mindful movement and eating for moms with MindBodyWise and Eat To Love. 6:30-8:30 p.m., FREE. Athleta, 1517 Third Ave. Info and RSVP: Kadie_Chronister@stores.gap.com with the subject line Nurturing the Nurturer

INSANITY with Tricia Elise: Fast-paced HIIT-style cardio conditioning program. All levels welcome. 8-10 p.m., FREE. Athleta, 126 Fifth Ave. Info: 212-929-0512

MAY 22

Stand Up Paddle Board Yoga: Boga Yoga demo. 6:30-8:30 p.m., FREE. Athleta, 1517 Third Ave. Info: 212-249-2072

Shape Up NYC -- Cardio Toning: Work your core through strength, balance and toning exercises while keeping your heart rate up. Mat recommended. Noon-1 p.m., FREE. Prospect Park Audubon Center, Lincoln Road/Ocean Avenue entrance. Info: 718-287-3400

MAY 23

Red, White and Blue Run Group: A 3-4-mile run with coach Rachel Edelman. All paces welcome. 8:30-10 a.m., FREE. Meet at Athleta, 1517 Third Ave. Info: 212-249-2072

Shape Up NYC -- Zumba: Aerobic, dance-based workout that sculpts and tones the body. 9-10 a.m., FREE. Poe Park Visitor Center, 2640 Grand Concourse, Bronx. Info: 718-365-5516

Pure Yoga at The Standard: Yoga class overlooking the High Line. 9:30 a.m. and 11 a.m., $25. 848 Washington St., 3rd Fl. Info and registration: Pureyoga.com

MAY 24

Summer on the Hudson -- Tai Chi: Learn and practice Tai Chi with Silvana Pizzuti. 8-9 a.m., FREE. Soldiers' and Sailors' Monument, Riverside Park, West 89th Street and Riverside Drive. Info: 311

Yoga at Morris-Jumel Mansion: Vinyasa Flow-style, moderate class. 1-2 p.m., FREE ($5 suggested donation). 65 Jumel Terrace. Info: 212-923-8008

MAY 25

Broadway Dance: Workout set to show tunes designed to improve strength and flexibility. 10 a.m., FREE. Brooklyn Bridge Park Pier 2. Info: Brooklynbridgepark.org

Shake Out Mondays Run: Start the week with a 3-4 mile run led by Belly's Running World. 6:30 p.m., FREE. Lole Atelier, 112 Mercer St. Info and RSVP: Facebook.com/lolenewyork

MAY 26

Bryant Park Tai Chi: Led by CK Chu Tai Chi. 7:30-8:30 a.m., FREE. Fountain Terrace, Sixth Avenue and 41st Street. Info: 212-768-4242

Bryant Park Yoga: Presented by Athleta. Mats provided. 10-11 a.m., FREE. Upper Terrace in Bryant Park. RSVP: Yoga.bryantpark.org

Pilates Meet-Up: With Body Tonic Pilates Gymnasium. Class will be filled on a first-come, first-served basis. 6:30-7:30 p.m., FREE. Lole Atelier, 112 Mercer St. Info: Facebook.com/lolenewyork