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Day 1

Workout: Let's begin with the fat-blasting workout. We've created three versions of this treadmill run, along with a printable version of all three levels. If you're new to running, try the Walk/Run plan further down the page. And if you want to increase the speed, use the Run Faster program.

Recipe: As part of your healthy breakfast or lunch, whip up a deliciously sweet flat-belly smoothie. It's packed with ingredients that fight belly fat and reduce bloating such as blueberries, pineapple, kale, and Greek yogurt — all for under 300 calories.

Bonus: Get a head start on Day 2 by whipping up this overnight oats recipe to enjoy tomorrow morning.

Get all the details for Day 1 here.

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