Learning About Calories

Working out Smart

How many calories are in YOUR favourite drink?
Porridges were also made of every type of grain and could be served as desserts or dishes for the sick, if boiled in milk or almond milk and sweetened with sugar. You'll need to pedal four miles to burn calories, says Alexander. Nashville exercise physiologist Kathy Alexander agrees: How to Maximize Fat Burning Rate. However, the honey -based drink became less common as a table beverage towards the end of the period and was eventually relegated to medicinal use.

Choosing a Machine

Finding a Balance

Calories aren't bad for you. Your body needs calories for energy. But eating too many calories — and not burning enough of them off through activity — can lead to weight gain. Most foods and drinks contain calories. Some foods, such as lettuce, contain few calories 1 cup of shredded lettuce has less than 10 calories. Some people watch their calories if they are trying to lose weight.

Most kids don't need to do this, but all kids can benefit from eating a healthy, balanced diet that includes the right number of calories — not too many, not too few. But how do you know how many calories you need? Kids come in all sizes and each person's body burns energy calories at different rates, so there isn't one perfect number of calories that every kid should eat.

But there is a recommended range for most kids between 6 and 12 years old: When they reach puberty, girls need more calories than before, but they tend to need fewer calories than boys.

As boys enter puberty, they may need as many as 2, to 3, calories per day, especially if they are very active. But whether they are girls or boys, kids who are active and move around a lot need more calories than kids who don't. If you eat more calories than you need, the body changes extra calories to fat.

Too much fat can lead to being overweight and other health problems. Only your doctor can say if you are overweight, so check with him or her if you're concerned. And never go on a diet without talking to your doctor!. High-calorie foods — such as sugary sodas, candy, and fast food — quickly add up to too many calories.

To find maximal heart rate, subtract your age from The fat burning and cardio zones are defined as a percentage of this maximal heart rate.

A heart-rate zone that improves cardiovascular fitness is defined as between 55 and 80 percent of maximum heart rate, according to The American College of Exercise. A less-conditioned individual may see benefits to her heart health at the lower levels of this recommended zone while an athlete needs to work at a higher intensity to improve fitness.

The fat-burning zone occurs at the lower end of the cardio zone—between 55 and 70 percent of maximum heart rate. When working at this intensity, a greater percentage of calories burned comes from stored fat.

Working anywhere within the cardio zone will improve cardio fitness and burn calories. The benefit of working in the fat-burning zone is that you target stored fat and thus encourage weight loss.

But, keep in mind, that if you work in a higher zone, you burn a greater amount of calories overall—which is important to weight loss.

Although a lower percentage of these calories will come from fat sources, the total number of fat calories burned will likely be the same or greater. Take, for example, a person who burns calories in a minute walk at a heart rate of 55 percent of maximum.

Seventy-five percent of those calories, or 75 calories, may come from fat. However, a person who runs those same 15 minutes and burns calories may burn only 50 percent of those calories from fat, but will burn a total of fat calories in the same amount of time.

How Calorie Burn Works