It's not rocket science: Focus on lean protein, healthy fats and non-processed, unrefined carbohydrates such as vegetables, beans, whole grains and fruit.

　　这不难懂：多摄取低脂肉类、健康的脂肪、非加工处理过的碳水化合物，像是蔬菜、豆类、全麦类与水果。