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The secret to the celebrity-endorsed slim-down lies in muscle confusion, which is actually a good thing.

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The technique involves switching up workouts so muscles don’t know what’s coming next.

On other days, take some new classes to mix it up even more.

You’ll needA chair, that’s it.

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Step back to start.

As left leg swings back to floor, hop onto left foot, bending torso to right.

Continue, alternating sides, for 1 minute.

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Horton’s hint: the sillier you look, the better!

Superman Banana

Works lower back, absLie faceup, arms overhead on floor.

Raise all limbs and head off floor (as shown) to start.

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Hold position for 3 counts.

Roll onto stomach, with hands, feet and head still aloft; hold for 3 counts.

Repeat on opposite side for 1 rep. Continue, quickly alternating legs, for 1 minute.

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Side Tri-Up

Works triceps, chestLie on right side with legs stacked and extended.

Press through left hand (as shown), straightening arm, as you lift upper body off floor.

Return to start for 1 rep. Do 12 reps. Switch sides; repeat.

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Minka Kelly’s Body-Changing Workout

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