Charlie Sheen's estranged wife Brooke Mueller has fled Los Angeles to undergo an intense workout program as part of a new reality show, according to reports.

The Two And A Half Men actor was sentenced to 30 days in rehab after pleading guilty to a charge of misdemeanor assault last month following a Christmas Day bust-up with his wife. Mueller, who has two children with the actor, also went to rehab following the breakdown of their marriage, and recently sparked rumors she had returned to the clinic for a second time in a year after leaving her L.A. home.

Her spokesman, Elliot Mintz, insists she has departed her hometown to embark on an "intensive, physical fitness program in Southern California."
 
And TMZ.com reports that the workout regime is for a new TV series which will be based on celebrity lifestyles, and will also follow troubled socialite Paris Hilton.