Fats contain 9 calories per gram and is a long lasting energy source.
Fat
Fat
Fat
Fat provides a concentrated source of energy in the form of calories. Each gram of fat contains 9 calories, which is more than double the amount provided by carbohydrates or proteins. Fat serves as a long-lasting and efficient fuel source for the body, especially during sustained activities like endurance exercise.
It would depend how much of the nutrient is consumed.
Food (and drinks) besides water all contain what are known as Calories. A calorie, by definition, is the amount of energy it take to raise 1 gram of water 1 degree Celsius. When we eat foods, our body digests and breaks them down. The calories are stored in our body. The liver is a big part of this storing-and-using-calories process. When the body needs energy (from anything crucial to living like blinking and breathing to extra tasks like sports or walking up a flight of stairs), our body uses these calories to turn into energy. Excess calories are stored in the body to be used at a later time. Sucha a time would also be while sleeping, when the body still needs some energy to function despite no food or drink intake for a long period of time. Large amounts of excess calories are stored as fat in the body (3,500 extra calories equal one solid pound of fat).
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Complex Carbohydrates is brown bread, multigrain bread and cereal it usually provides longer lasting energy
What you're looking for are Complex Carbohydrates (starches) which are basically just foods with longer sugar strands. Brown rice, whole grains, and pastas are a few examples of starchy foods that provide long lasting energy.
Casein is considered a long-acting protein. The casein micelle has the ability to form a gel/clot in the stomach which makes it very efficient in supplying nutrients over a sustained period. This slow release of amino acids into the blood stream, sometimes lasting for several hours, provides for better nitrogen retention and utilization by the body.