what is a calorie, really, and how many of them do we actually
need? Calories are a way of keeping track of the body's energy budget
.A calorie is unit of energy,it is way of measuring how much energy our
body get from eating and drinking. A healthy balance occurs when we
put in about as much energy as we lose. If we consistently put more
energy into our bodies than we burn, the excess will gradually be stored
as fat in our cells, and we'll gain weight.If we burn off more energy than
we replenish,we'll lose weight So we have to be able to measure the energy
we consume and use, and we do so with a unit called the calorie. One
calorie, the kind we measure in food, also called a large calorie,is defined
as the amount of energy it would take to raise the temperature if one
kilogram of water by one degree celsius.
Everything we consume has a calorie count, a measure of how much
energy the item stores in its chemical bonds. The average pizza slice has 272
calories there are about 78 in apiece of bread, and an apple has about 52.
That energy is released during digestion and stored in other molecules that can be broken down to provide energy when the body needs it.It's used in three ways about 10% enables digestion about 20% fuels physical activity, and the biggest chunk, around 70% supports the basic functions of our organs and tissues.
How many Calories should I Eat
That third usage corresponds to your basal metabolic rate, the number
of calories you would need to survive if you weren't eating or moving around.
Add in some physical activity and digestion, and you arrive at the official
guidelines for how many calories the average person requires each day:2000
for women and 2500 for men. Those estimates are based on factors like average weight, physical activity and muscle mass. So does that mean everyone should shoot for around 2000 calories? Not necessarily If you're doing an energy-guzzling activity like cycling a trip to Russia or any European countries, then ourbody could use up to 9000 calories per day, but that is rare nowadays Olive oil
is 100% fat,there's nothing else in it. Pancake mix, on the other hand, is only about 11% fat. And, yet, olive oil is good for you, and pancake mix is not.Why is that? As it turns out, the amount of fat
we eat doesn't impact our weight or our cholesterol or our risk of heart disease nearly as much as what ind of fat we Eat.
How Many calories should pregnant women eat ?
Pregnancy requires slightly more calories than usual, and elderly
people typically have a slower metabolic rate,energy is burned more gradually,
so less is needed.Here's something else you should know before you start
counting calories.The calorie counts on nutrition labels measure how much
energy the food contains,not how much energy you can actually get out of it.
The right amount of calorie for normal weight pregnant women is roughly
within 2000 calories per day and gradually it will grow as the month
progresses by 200 ethical to say 2200 calorie during 4/5 months and it may
grow up to 2400 calorie to 2800 calorie maximum in the closeing.
High calorie foods
Fibrous foods like celery nd whole wheat take more energy to
digest,so you'd actually wind up with less energy from a100 calorie serving
of celery than a 100 calorie serving of potato chips.Not to mention the fact
that some foods offer nutrients like proteins and vitamins, while others
provide far less nutritional value.
Eating too many of those foods could leave you overweight and
malnourished.and even with the exact same food,different people might not
get the same number of calories variations in things like enzyme levels
,gut bacteria,and even intestine length,means that every individual's ability to extract energy from food is different genetically .So a calorie is a useful energy measure,but to work out exactly how many of them each of us requires we need to factor in things like exercise,food type,and our body's ability to process enrgy.
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