Kirstie Alley used to have sex for two hours every day.

The 60-year-old 'Dancing With The Stars' contestant boasted of her marathon romps, but warned they ultimately couldn't bring happiness to her relationships.

Speaking on 'The Ellen Degeneres Show' Kirstie said: "I really hadn't had a boyfriend for the last ten years - a serious boyfriend. It was the best ten years of my life. I had a lot of freedom.

"The way I used to pick guys was so shallow. Hot? OK, that'll be my husband.

"Here's my big revelation. I decided that in the best of times you have two hours of sex a day, so you have 22 hours left."

At this point show host Ellen stopped the former 'Cheers' actress to clarify her statement, saying: "Whoa, whoa, what? Two hours a day?"

Kirstie - who has been married twice, to high school sweetheart Bob Alley and actor Parker Stevenson - jokingly replied: "Not enough?"

She later clarified her estimated time spent lovemaking, saying: "There's the prelude, the sex and there's the winding down."

Kirstie is one of the final five dancers remaining on 'Dancing with the Stars' competing when the show returns next week.