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Day 3

Workouts: If you want to achieve that flat belly, cardio intervals should be a regular part of your fitness routine. Short, intense bursts have been proven to melt away fat, especially around your midsection. This 30-minute treadmill workout is a favorite of celebs like Sandra Bullock and Kim Kardashian, and once you hop on the machine it'll be easy to see why.

Recipes: After your sweat session, fuel up with a substantial quinoa and kale salad with many different belly-busting properties. Quinoa is full of protein to help keep you full, while the fiber in kale will also help aid in slow digestion. Moreover, studies have shown that blueberries and almonds may both help diminish belly fat. At under 400 calories, this colorful and flavorful salad is hard to beat.

Bonus: Start your day with this caffeine-free cranberry and apple cider vinegar shot. A favorite of actress Nikki Reed, this detox drink masks the flavor of digestion-friendly, liver-cleansing apple cider vinegar with pure cranberry juice. The result? A boost of energy whenever you need it.

Get the details for Day 3 here.

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