Ready, reset, go: our Flat-Belly Challenge  has 21 days of belly-blasting workouts, tips, and recipes to help you start a new season on a fresh note. Today, day one is all about belly-fat-fighting intervals and a debloating smoothie made with pineapple, kale, and blueberries.
Fire-It-Up Interval 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 farther down the page. And if you want to increase the speed, use the Run Faster program.
Flat-Belly Smoothie Recipe
As part of your healthy breakfast or lunch, whip up this.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.
3 ounces vanilla nonfat Greek yogurt
1 tablespoon almond butter
1/2 cup frozen blueberries
1/2 cup frozen pineapple
1 cup kale
3/4 cup water
- Place all the ingredients in a blender, and mix until smooth.
- Enjoy immediately.
Makes one serving.
Photo: Jenny Sugar