Singer Jennifer Lopez stunned at the recent Grammy awards with her toned body and six pack — and it’s the result of a stringent 10-day diet challenge. The soon-to-be 50-year-old embarked upon a 10-day, no-sugar, no-carb challenge to “reset” her body and get healthier.

Shy posted a selfie of her buff tummy just five days into the challenge showing how quickly she achieved results by shunning all carbs and sugar — including dairy and fruit.

“Now when I go back to eating fruit in 10 days, it’s going to taste like ice cream,” she told the Today Show at the time. “The first and second day is when you realize you’re addicted to sugar. It’s like a drug.”

J. Lo adds that you can definitely lose weight on the diet.

“You will lose a bunch of pounds on it, you will lose inches because once you get rid of that sugar and those carbs it just keeps coming off,” she says, adding that her personal trainer encouraged her to take the challenge.

According to Today’s nutritionist Joy Bauer, R.D., when you follow a no-carb diet it means weeding out all added sugar and starchy carbs including the obvious foods like bread, pasta, cookies and candies.

But J. lo even eliminated starchy vegetables, dairy and fruits which have naturally occurring sugars. Veggies like cauliflower, broccoli, zucchini along with meat, nuts, seeds and nut butters are approved.

Tara Gidus Collingwood M.S. RDN, the team dietitian for the Orlando Magic, tells Newsmax that “this diet is obviously very strict.”

“Short term, you will lose weight because your glycogen stores will be depleted and they hold significant water in the body,” she explains. “Be warned that even though you are losing pounds on the scale, some is water weight and will come back on as soon as you replete your glycogen stores — it’s not all fat coming off!

“Even if your drink water galore, you will still lose water weight when these carb stores are depleted.”

Collingwood says that while it’s true that some folks may have a psychological addiction to sugar or carbs, the bottom line is that we love carbs because our body needs them for energy.

“Eliminating them is drastic, and I would recommend only doing it for a very short time, a few days up to a week,” she adds, “When the diet is over, add back nutritious carbs like fresh fruit, all veggies, legumes, whole grains and low-fat dairy. Try to keep added sugars out of your diet for good!”

The expert adds that if you are thinking of embarking upon this diet plan, you should take a multivitamin, vitamin D, and calcium supplement to make sure you are getting enough of the ingredients you are eliminating in the entire food groups you are avoiding.

And she notes, “Anytime you get that strict it’s not sustainable for long,” says Collingwood. “I would rather be happy and eat chocolate than be miserable with a six pack!”