Start a flex plan.

SHOP
Anna May “Babe” Ahern Estate Sale at Bizen Home
What: Peruse 15,000 square feet filled with items from the 103-years-long life of the professional golf coach and dame about town.
Why: Mink golf club covers, vintage fur, costume jewelry, record players, and more.
When: Thru Sun., 8 a.m.-7 p.m.
Where: 111 W. Kinzie St., b/t Clark & LaSalle Sts. (312-832-6868).

BURN
Core Fusion Boot Camp
What: Serve flab its exit papers in the new hour-long workout ($24) that uses core balls, weights, and ab exercises.
Why: Participate in March and score a deep-tissue massage for $99 (reg. $140).
When: Today, 1:30 p.m.; Fri., 6:35 p.m.; Sat., 5:05 p.m.
Where: Exhale, 945 N. State St., b/t Oak & Walton Sts. Reservations and memberships to 312-753-6500.

HEAR
Miami Horror
What: Melbourne band plays anything-but-scary electro pop splashed with disco beats.
Why: Their “Holidays” single is four minutes and 29 seconds of happiness.
When: Fri., 10 p.m.
Where: Lincoln Hall, 2424 N. Lincoln Ave., at Fullerton Ave. (773-525-2501). Tickets ($12) online at lincolnhallchicago.com.

BREAK
The Southern Mac Truck
What: Mark Steuer (chef of soon-to-open Bedford) joins the ride, adding mac with meatballs, roasted mushrooms, and sherry blue cheese gravy to Cary Taylor’s gut-busting menu.
Why: Proceeds go to Working Bikes Cooperative.
When: Today, starting at 11:30 a.m.
Where: Outside The Merchandise Mart, 222 Merchandise Mart Plz., at Wells St. Follow truck locations on Twitter or online at thesouthernmac.com.

EAT
Chicago Q Lent Special
What: If you can’t take the meat, get out of the kitchen and head to the resto for smoked Chilean sea bass with pan-seared Brussels sprouts.
Why: The hominy, corn, and black bean salad tempts, too.
When: Thru Apr. 22. Fri., 11 a.m.-1 a.m.
Where: 1160 N. Dearborn St., b/t Elm & Division Sts. (312-642-1160).

Photo: Baerbel Schmidt / Getty Images