With time constraints, managing your budget, oh, and Ty Pennington's "curveballs," competing on Rock the Block is no easy task.

For the winners of Season 3, Egypt explained to us that "the unknowns" were the "hardest part of the competition, the unexpected things that happen."

When the HGTV host would throw design details that must be incorporated into the finished product, Egypt said it was challenging to "be more flexible design-wise" versus the concept that she initially had in her head.

As for Mike, aside from working 24 hours straight, he revealed that the most challenging aspect of the competition was his "lack of tools."

He added, "I didn't know we were allowed to bring the entire garage if we needed to. That and the fact that we were shooting our show at the same time, we were under crunch time. So not to have the right tools and [being] on crunch time ..."

"It was crazy," Egypt said.

Though working on two shows simultaneously while balancing their personal life can be a bit difficult, the HGTV power couple wouldn't have it any other way.

"Working with someone you love ... you're doing what you love with the person you love," Mike said. "And you get to accomplish all of these visions and all of these ideas that you have, and seeing them come to pass knowing that you did it together."

He added, "And for me, that's an amazing feeling."

Reporting by Gabrielle Bernardini