It’s unclear who Faith Hill inherited her figure from, but whoever it was: Kudos!

The country star graces the cover of Shape magazine’s December 2008 issue in a bikini and shows the world what her hubby Tim McGraw has to look forward to when he comes home.

So what’s her secret for maintaining her remarkably well-preserved form? As it turns out—shockingly—lots of exercise.

In an excerpt from the Shape article, People magazine notes that Hill and McGraw took up a daily routine in July that includes four miles on the elliptical machine, light weight lifting, crunches and push-ups.

Hill augments this regimen with thrice-weekly Pilates classes, which she credits with restoring her flexibility.

“I could bend in ways I haven’t been able to since I was a teenager,” Hill raves. “My husband loves it!”

McGraw probably isn’t the only musician who’d appreciate Hill’s teen-like pliability.