The Black Eyed Peas singer and her husband Josh Duhamel tend to enjoy low key weekends, thanking God for all he has given them rather than partying their nights away.
Fergie told UsMagazine.com: "On Saturdaynights, we like going to mass, then dinner.
"It feeds our spiritual side, and it`s great to hear Josh sing in church - he`s a great singer.
"Then we go out and have a really nice wine, like all good Catholics."
Fergie - who was once addicted to crystal meth - also likes cozy nights in with her husband especially when he cooks his speciality dish for her.
She added: "He makes the best lasagna, and I do the dishes. I find it cathartic."
Although she`s chilled out at home, the `Meet Me Halfway` hitmaker admits she can get irritated by Josh when they exercise together.
She explained: "Working out with Josh inspires me, but he is competitive. And loud!
"So are the Peas. Men scream and go crazy in the gym. I`m a silent workout partner, but when my adrenaline gets up, I talk trash. When Josh does something embarrassing, I`ll throw a jab. I used to yell and curse in the gym, but now I`m looking for a more healthy, positive feeling."
The Black Eyed Peas - Fergie, will.i.am, apl.de.ap and Taboo - are all on an agreed hiatus from the band.