After Demi Moore divorce, Ashton Kutcher didn't eat for a week

“I did no food, no drink -- just water and tea," the actor said.

“Right after I got divorced, I went to the mountains for a week by myself,” Kutcher said in the interview. “I did no food, no drink -- just water and tea. I took all my computers away, my phone, my everything. I was there by myself, so there was no talking. I just had a notepad, a pen and water and tea -- for a week.”

For this post-divorce regimen, Kutcher said he practiced tai chi to help combat the hallucinations he said he was experiencing during his seven-day cleanse in Big Sky, Montana.

In fact, Dr. Jay-Sheree Allen, Family Medicine Resident Physician at the Mayo Clinic, tells ABC News, “I would highly discourage someone from starving and socially isolating themselves to the point that they begin to see and/or hear things that don't exist."

In a move he compares to an Alcoholics Anonymous exercise, Kutcher said he also wrote letters to every person with whom he’d ever been in a relationship.

"I [did it where] I felt like there was some grudge or some anything, regret, anything," he explained. "And I wrote letters to every single person, and on day seven, I typed them all out and then sent them.”

Kutcher calls the trip “really spiritual and kind of awesome,” adding it “[cleared] his palette.”