Explain the relationship between food and exercise. Including purpose of each ma!
Question: 'Macronutrients' are the main 'food groups' (protein, fat, carbohydrate; sometimes fibre and alcohol are included). These categories aren't particularly useful, and often mislead.
Other nutrients (vitamins, minerals) are 'micronutrients', because you need very small amounts of these by comparison with the others.
The relationship between exercise and ANY nutrient is mainly through energy (calories or joules). Most energy comes from 'burning' sugars and fats.
Confusingly, both of these are 'carbohydrates' (molecules built from C, H, and O), but in nutrition only the sugars are called carbohydrate. The proper terms are 'saccharide' (sugars) and 'lipid' (fats).
Sugar has less energy in it, but it burns faster. Fat contains more energy, but it can only be released slowly. During 'exercise' (and any other activity), your body 'juggles' the demand for sudden or steady power, against the availability of each kind of fuel. Burning sugar makes you tired and hungry, but activity powered only by fat can be continued indefinitely without causing fatigue (this can only happen at an 'intensity' of 50% or lower, which is usually BELOW the level of activity that's defined as 'exercise').
Protein is only used as a source of energy in emergencies. Micronutrients usually help to 'fine tune' the energy release process (or assist recovery), rather than providing energy.
Normal digestion and absorption breaks proteins down into components called 'aminos', and these are used to construct tissues, including bone and muscle. This means that proteins are involved in muscle growth, but that process does NOT happen during exercise, and is only stimulated by a particular type of exercise.
This answer should be too vague to act as the answer you need to give, but it will give some clues to the detailed research that you need to do, to produce a top-scoring answer.
Answers: 'Macronutrients' are the main 'food groups' (protein, fat, carbohydrate; sometimes fibre and alcohol are included). These categories aren't particularly useful, and often mislead.
Other nutrients (vitamins, minerals) are 'micronutrients', because you need very small amounts of these by comparison with the others.
The relationship between exercise and ANY nutrient is mainly through energy (calories or joules). Most energy comes from 'burning' sugars and fats.
Confusingly, both of these are 'carbohydrates' (molecules built from C, H, and O), but in nutrition only the sugars are called carbohydrate. The proper terms are 'saccharide' (sugars) and 'lipid' (fats).
Sugar has less energy in it, but it burns faster. Fat contains more energy, but it can only be released slowly. During 'exercise' (and any other activity), your body 'juggles' the demand for sudden or steady power, against the availability of each kind of fuel. Burning sugar makes you tired and hungry, but activity powered only by fat can be continued indefinitely without causing fatigue (this can only happen at an 'intensity' of 50% or lower, which is usually BELOW the level of activity that's defined as 'exercise').
Protein is only used as a source of energy in emergencies. Micronutrients usually help to 'fine tune' the energy release process (or assist recovery), rather than providing energy.
Normal digestion and absorption breaks proteins down into components called 'aminos', and these are used to construct tissues, including bone and muscle. This means that proteins are involved in muscle growth, but that process does NOT happen during exercise, and is only stimulated by a particular type of exercise.
This answer should be too vague to act as the answer you need to give, but it will give some clues to the detailed research that you need to do, to produce a top-scoring answer.
Don't burn off more than you've eaten? Sorry don't understand the last bit.
It will be too long to ans this
This link will help you better
http://pm4health.blogspot.com/
You write with apparent intelligence, bet you know the answer already.
I love it when people post essay questions on Yahoo Answers!