The former 'Friends' star - who recently made a cameo appearance in
Courteney Cox's new series 'Dirt' - is purging herself of toxins in a bid to
cleanse her system.
'Dirt' actress Laura Allen said: "Jen was doing a total cleansing. She did a
lot of yoga to stop smoking.
"Between takes, it would have been tempting to go outside and have a
cigarette. Instead, Jen was clinging to Courteney. She said how hard it
was."

In addition to resisting the temptation to indulge in smoking, Aniston also managed to refrain from caffeine.

Allen adds, "I had a Diet Coke on-set and she was really jonesing (craving) for it!"

Jennifer, 38 - who was a chain smoker despite her healthy diet and exercise
regime - is also struggling to get through the day without caffeine.
Laura said: "I had a Diet Coke on-set, and she seemed desperate for it."
The 32-year-old actress also lifted the lid on the lesbian kiss Jennifer
filmed with best friend Courteney, 42, in the season finale of 'Dirt'.
She told Us Weekly magazine: "Courteney has some steamy sex scenes. This was
actually really tame."

Last week, gossips reported that Jennifer Aniston was back together with Vince Vaughn after Vince agreed to settle down and start a family straight away.

A source claiming to be close to the pair told NW magazine that the couple got back together after Jennifer’s 38th birthday party last month.

The couple dated in secret for around a year before splitting last November but the source revealed that Vince decided to give their relationship another try after hearing that Jennifer was planning to have, or adopt, a child by herself.

The source said: “It kills him to think about her bringing a child home on her own.�