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Essay On Body Needs Energy

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ENERGY
The body needs energy for five reasons:
• Basal Metabolism
• Body Composition
• Digestion and Absorption
• Physical Energy
• Mental Energy
A Basal Metabolic Rate refers to the minimal amount of energy that is needed to keep you alive and functioning. This is the energy needed when you are resting. 60 to 65% of your daily energy stores are used by your basal metabolism. This energy supports your circulation, respiration, digestion, excretion and the vital organs’ functions. Your body is kept warm by 7% of your total energy. Energy needs can be different according to age, gender, health, diet, fitness and body composition.
The most metabolic tissue in the body is muscle, meaning that it needs more energy than other body tissues. Men are …show more content…

Foods containing carbohydrates are compared with white bread as a reference food (given a GI score of 100). It compares foods hat have the same amount of carbohydrates. High GI scores are given to carbohydrates that break down quickly during digestion. These are given a GI of over 70. Glucose is released into the blood by high GI carbohydrates quickly. Carbohydrates that are broken down slowly release glucose slowly into the blood. They are given GI scores of 55 and lower.
GI and weight loss
Low GI diets are promoted as an effective method of weight loss by controlling the sugar in our blood and appetite. Weight loss should not only be considered when a person has a low GI diet. They need to make sure that the serving size and the nutritional quality of the diet are sufficient.
GI and exercise
When a person eats low GI foods two hours before exercise, it might improve the exercise capacity. During the first 24 hours of recovery, high GI foods are recommended. This is done to quickly stock up on glycogen (muscle fuel stores).
FAT
Why you need fats: Good fats
• Fats provide

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