There was a time when straps and harnesses meant you were in for a hot date. But now that you’ve signed up for nine months of navel-gazing, you’re in no mood to get tied up.

Unless it’s part of the Babylates (that’s Pilates for the prenatal and postpregnancy set) class from The Studio (MDR). Trainer Jessi Piha has perfected a core curriculum that takes the focus off lengthening abs (which can cause stress and tearing during pregnancy) and redirects it toward strengthening the body to ensure a smooth delivery and easy recovery.

In group classes or private instruction, you’ll learn the ropes of the Megaformer through exercises that safely tone arms, your core, and that ever-expanding booty. And since the arrival of your bundle shifts your center of gravity — both physically and emotionally — devoting an hour to yourself may be just what you need to get back in the mood.

Or at least back into your jeans.

Available at The Studio (MDR), 330 West Washington Boulevard, at Sanborn Avenue, Marina Del Ray (310-561-9814 or thestudiomdr.com). Group classes, $40; private instruction, $100.

DELVE
Summer Opportunities Fair
What: Investigate more than 100 local and international day camps, travel groups, and summer schools to make June, July, and August fly by.
Why: You’re already planning those care packages.
When: Sat., 10 a.m.-3 p.m.
Where: Westridge School, 324 Madeline Dr., at Orange Grove Blvd. (626-799-1153). Free.

LEARN
American Indian Culture Day for Families
What: Scavenger hunts, guided tours, storytelling, and music tell the tale of America’s first families.
Why: This land is their land.
When: Sun., 1-5 p.m.
Where: The Autry in Griffith Park, 4700 Western Heritage Way, at Zoo Dr. (323-667-2000 ext. 252). Free with museum admission. Adults and teens, $10; children 3-12, $4; children under 3, free.

CREATE
Valentine’s CARds Workshop
What: Create auto-themed cards at this family workshop. Then stay and play with every manner of truck imaginable.
Why: It will drive them wild.
When: Sat., 1-4 p.m.
Where: Petersen Automotive Museum, 6060 Wilshire Blvd, at Fairfax Ave., 3rd flr. (323-930-2277). Adults, $10; children 5-12, $3; under 5, free.

Photo: Thinkstock