Brady Bunch actress Maureen McCormick, 60, is pushing her body, mind and emotions to the limit while competing on Season 23 of Dancing With The Stars.
These candid photos were taken after a rehearsal in Los Angeles, California, on Saturday, September 10, just two days before the show's premiere.
A witness tells the Dailymail.com: 'She looked completely exhausted. It's obvious she's putting her whole heart and soul into this competition.
'I just don't know how she will be able to keep up this pace and compete with Olympic gymnasts and other pro-athletes.'
Brady Bunch actress Maureen McCormick looked 'completely exhausted' on Saturday, just two days before her Dancing With The Stars premiere
McCormick, 60, was spotted leaving rehearsal on Saturday, wearing a long sleeve shirt and overalls
A witness told Dailymail.com that it was 'obvious' that McCormick was 'putting her whole heart and soul' into the competition
On last night's premiere episode of the hit ABC reality show, McCormick, 60, teared up and rambled on in front of the judges after her first dance (a Viennese Waltz) with pro-partner Artem Chigvintsev.
Her former sitcom mother Florence Henderson, 82, was front and center watching her perform, and warmly embracing her afterwards.
McCormick played iconic Marcia Brady on the Brady Bunch from 1969-1974, and later starred in The Brady Brides in 1981 alongside her TV sister Jan, Eve Plumb, now 58, in 1981.
But her life has been far from a sitcom. The actress wrote an eye-opening tell all in 2008, titled, Here's The Story: Surviving Marcia Brady and Finding My True Voice.
McCormick made her first appearance on Dancing With The Stars on Monday, with her partner, Artem Chigvintsev