Fergie and her husband Josh Duhamel go to church every Saturday night.
Fergie spends her Saturday nights in church.
Fergie told UsMagazine.com: ''On Saturday nights, 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 specialty 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.