OMG...I think article have knowledge about food sustain energy throughout the day, while too many sugary snacks can lead to energy crashes. Find out which foods you need for round-the-clock energy. Your body breaks down nutrients into smaller components and absorbs them to use as fuel. The body process is known as metabolism. carbohydrates contain fiber, which takes a longer time to digest in the body as it is absorbed slowly. The food high in fiber, protein, and fat take a longer time to digest. This gives a feeling of satiety and less hungry and this is food you need for round-the-clock energy.