It ain’t easy looking as buff as J. Lo and A-Rod. Page Six reports the fabulously fit couple is currently on a ten-day “No Carbs, No Sugar” challenge. Jennifer Lopez posted an Instagram video of she and boyfriend Alex Rodriguez on Wednesday saying, “10-day challenge is starting to get lonely, so we’re challenging YOU!” They called out some famous friends by name, including Leah Remini, Hoda Kotb and Michael Strahan. The results have been mixed. BFF Remini commented, “No, I’m not up for it. Gonna go eat now… maybe a plate of pasta, some cookies, but you all enjoy.” Kotb announced on TODAY that she and her morning crew were up for it. Strahan’s response on Good Morning America showed him eating a doughnut, but he said he’d be in…starting Monday.