The Two Major Changes Jennifer Aniston Made to Her Diet to Get Her Best Body Ever at 56 (Exclusive)

Abs-olutely next-level!

Jennifer Aniston showed off her sleek physique in PVOLVE’s new “Worth It Everytime” campaign, which aims to help members find motivation to exercise in the New Year.

“It’s hard to believe Jen could look any better than she already does, but she’s taken things up a notch lately,” a source tells Star. “A lot of it comes down to having a healthier lifestyle now that she’s in a relationship.”

The Friends alum, 56, began dating transformational coach Jim Curtis, 50, this past summer.

“Jen used to really enjoy unwinding with a stiff drink at the end of the day. It was part of her routine and something she saw as a reward,” says the source. “That’s not the case these days. Now, she and Jim have herbal tea together before bed.”

Aniston hasn’t given up alcohol completely, the source notes. “She’s just much more aware of the toll alcohol takes on her. Without it, she’s getting much better sleep and it’s got her even more shredded than she already was.”

Cutting back on booze isn’t the only change the Morning Show star’s made to her diet.

“Jen and Jim are real homebodies, so she’s cooking a lot more instead of just going out to dinner and that’s made a difference too,” adds the source. “She certainly isn’t seeing this as some sort of pre-wedding shape-up, but it’s no secret that a wedding is in the cards for this year.”

As Star previously reported, it’s not a matter of if but when the pair will get engaged.

“They talk pretty openly about it,” the source reveals. “Friends are all predicting that they’ll elope, maybe even for her birthday next month, and then follow it up with a small celebration at home.”