JLo & A-Rod Encourage Fans To Try Their 10-Day Challenge

Jennifer Lopez and Alex Rodriguez are super proud of a 10-day challenge they've just completed, and want fans to try it too.

The couple made it to the end of 10 days with a no sugar, no carb diet. 

Lopez said on Instagram the challenge wasn't easy, and that her and Rodriguez "struggled through". 

This was posted just before the 10-day mark. Those rock hard abs?! AMAZING.

Those abs are so amazing even Lopez' ex, Diddy, couldn't help but comment.