Scientists have uncovered the amount of calories we should be eating at breakfast to protect our heart from deadly diseases. A new study has pinpointed how much we should be eating to start our days - as well as the types of food that are best. For years there has been much debate around whether breakfast really is the most important meal of the day. And while there are conflicting theories on if we should even eat breakfast or skip it altogether, new evidence suggests it can play a huge role