Jennifer Lopez: "I Hit My Stride" After Giving Birth To Twins

Who says it's a drag getting old? Jennifer Lopez says her body is only getting better, especially after giving birth to twins Max and Emme, 3. "Having the twins changed my body. It feels different on the inside as well as the outside," she said. "The texture of my muscles has even changed.

"I feel like I've hit my stride in my 40s. In my 20s I knew nothing about taking care of my body but now I'm 41, I feel like this is the age," the American Idol judge enthused.

"I think women are looking after themselves more than ever. And we're also not allowing people to write us off either."

And although Jennifer has been exercising five times a week to get in shape for a music video, she says it's not her intention to stick with this regimen. "It's not always like this though. The thought of working out every day for the rest of my life terrifies me."