Top 10 Facts Why Breakfast is the Most Important Meal of Day, Most healthiest One. A nutritious Breakfast can do wonders to your Health and Fitness- 1.Destruct the Word – Break + Fast – ‘You are breaking up your fast’, when we wake up in the morning, our body has been fasting  as you were asleep without any food. So by eating your breakfast, you are fueling your body including Brain, with energy, much needed to properly function.