Jennifer Lopez: "My Abs Are Pretty Flat For Having Twins!"

Jennifer Lopez recently told Us that she's pretty impressed with her figure these days.

My abs are pretty flat for having twins!" Lopez said on Wednesday.

We just spotted J.Lo sporting her gorgeous figure poolside with her adorable twins. So what's Jenny from the Block's secret? "Nothing crazy," the 40-year-old singer-actress said. "It's about being consistent. That's it."

Although she doesn't have time to hit the gym every day, she said, "You have to put the work in."

Lopez mixes up her routine, hitting the StairMaster, boxing, biking and lots of lunges "to keep those thigh muscles firm," she said.

Not that she wants to get too skinny. "It's true I could serve coffee using my rear as a ledge, but I'm proud of my butt," she said. "A dress shouldn't look like a coat hanger. Skinny girls miss out."