Enrique Iglesias and Jennifer Lopez are currently on the road together with their first-ever joint tour, and Enrique says he's constantly amazed at what J-Lo's been able to accomplish since he first met her nearly 15 years ago.

Calling the exiting American Idol judge "an extreme professional," Enrique marvels to ABC News, "She's a survivor and I say that because I was lucky enough to meet her in 1998 and I've seen what she's done with her career, and I don't know how she juggles everything that she does."

Specifically, Enrique mentions "being, you know, a good mom, good entertainer, it's unbelievable.  It really is."  He notes, "I'm a guy.  I mean, for a girl, it's a thousand times tougher.  I, honestly, don't know how she does it!"

As for Jennifer herself, she says being on the road -- on this, her first world tour -- is something she's doing for the fans. 

"It's a huge undertaking at this point in my life and career, and with the babies and everything, but to be quite honest, I feel like my fans...now that you have Facebook and Twitter and they get to tell you what they want and what they don't want...really, after eight albums, it's just logical that they wanted me to tour," she explains.  "I also had to do it for myself, I think...I don't think I ever really pushed myself as much as I know that I can go.  And this is an opportunity for me to really do that."

The joint tour is quite long and grueling, but J-Lo denies reports that she needs all sorts of fancy things backstage to help her get through the hard work.  When asked what she needs to feel comfortable on the road, she tells ABC News, "Just my kids.  I mean, honestly, so long as they're there, and they're happy, you know, nothing."

She explains, "I think it's just about the people you want around you, you know.  You have your comfort.  I have my comfort.  I have my cousin with me, and different people who work with me and that's it."

The Enrique/J-Lo tour will take a break after August 31, but will resume again overseas in October and wrap up at the end of November in the Philippines.

Copyright 2012 ABC News Radio