The Absolute Best Breakfast to Flatten Your Stomach, According to an Expert

Egg and Avocado on Toast

1 slice whole-wheat toast
1 egg, cooked sunny-side up
1/2 avocado, sliced
1/2 medium grapefruit (on the side)

Total: 380 calories

Starting each meal with half a grapefruit helped adults in one study lose up to 10 pounds in 12 weeks without any other dietary changes.

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