Carrie Underwood defies the laws of physiques! The “Storyteller” singer posed for the cover of Us Weekly’s Best Bodies issue — and shared her stay-strong secrets with Us.

To sculpt her famous lean legs, the Calia by Carrie Underwood fitness apparel founder, 33, sticks to the basics. “I like squats, lunges,” she tells Us. “If I go for a jog and I meet up with a good hill, I will lunge up the hill and that will burn them out.”

The mom of 14-month old Isaiah (with her husband, NHL center Mike Fisher) commits to 90-minute workouts up to six times a week in her touring gym, then refuels with vegan eats. And she’s proud of the results. She says, “I feel much better now at 33 than I did when I was 20 because I take better care of myself.”

Pick up Us Weekly’s Best Bodies issue — on stands now — for more of Underwood’s sculpting secrets, plus get-fit tips from Julianne Hough, Lea Michele, Gigi Hadid and more sexy stars. 

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