5 pound 'wonder' smoothie behind Jennifer Aniston's fab figure

Now, the secret to her perfect body has been revealed.u00a0The 43-year-old star is apparently an ardent fan of a new ‘wonder' smoothie, worth 5 pounds - and drinks nothing else on one day every week.

Jennifer Aniston

"The drink is made up of fresh, organic vegetables. Beetroot, cucumbers, spinach, garlic, carrots, celery and kale." u00a0According to the source, the former Friends star drinks the super healthy concoction one day a week, usually on a Saturday.

Nutritionist Jeannette Jackson said that the smoothie could have amazing and cleansing health benefits.u00a0"The alkaline vegetables prevent bloating, help ease water retention and even mood swings," Jackson said.

"Beetroot helps clean the blood of toxins, celery and carrots boost potassium and sodium levels, and kale and parsley offer immense benefits to the brain, so you'll feel less stressed.

"The drink is filling so should be easy to do for one day a week, but make sure it's part of a healthy balanced diet," she said.u00a0Buzz is that Aniston's new smoothie diet is forming part of the preparations for a wedding after onlookers spotted her and boyfriend Justin Theroux looking loved-up in Paris last week.