The Wilson Phillips singer and professional partner Tony Dovolani became the fourth couple to exit the ABC competition on Tuesday night when they fell into the bottom two alongside Rob Kardashian and his partner Cheryl Burke.
Speaking on Jimmy Kimmel Live after the results show, she said: "I can't believe I don't have dance class tomorrow! I'm so relieved, oh my gosh, do you know how gruelling that show is?"
Kimmel then shared his theory that attractive women do not last long on the programme and said that he thought Phillips could have made the final three, to which she joked: "Yeah, well, so did I! What can I say? I failed the course!"
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Phillips then added: "I'll tell you one thing, I am not going to let go of my workouts from this day forwards because Dancing with the Stars saved my butt - it literally saved my butt!"
Dovolani was unable to join Phillips for the traditional post-elimination Kimmel interview because he is currently nursing a sprained ankle which required a visit to the ER following this week's performances.
He updated followers on his condition on Twitter on Tuesday, writing: "It's a sprain :( I was really hopping it was just that and no broken bones ! :) thank you all for your kind wishes. (sic)"
Phillips and Dovolani scored a total of 21 points out of a possible 30 for their tango to the theme song from Mission Impossible on Monday night's movie-themed episode of the show.
Dancing with the Stars airs Mondays and Tuesdays on ABC.
Watch Chynna Phillips's full interview with Jimmy Kimmel below: