Carbohydrates are a crucial part of a well balanced diet as they are a huge source of energy for your body. Complex carbohydrates are found in wholegrains and starchy vegetables and provide a more reliable and constant source of energy. Processed sugars found in sweets and cakes are a form of simple carbohydrates for a quick burst of energy but not very fulfilling. However, some forms of simple carbs can be very beneficial from sources like fruits and vegetables.