Determining how many calories you are burning while walking or running on a treadmill is not always easy. According to Clinical Exercise Physiology, the ideal calorie expenditure from planned exercise is 1,000 to 2,000 calories per week for optimum health.

A rise in the daily consumption of calories can be blamed for America's obesity epidemic. When you take in more calories than you burn, you gain weight. By 2010, Americans consumed 20 percent more calories compared to 1970, according to "The New York Times."

Understanding which foods in each food group are lowest in calories per serving can help you plan filling meals while on a weight-loss diet. Foods high in water or fiber tend to be lower in calories per gram.

Scotch whiskey is one of the lowest-calorie options on the drink menu, but moderation is still key. Alcohol calories are considered "empty" because they have no nutritional value. In addition, alcohol may stimulate your appetite, according to Columbia Health, causing you to consume more calories from food than usual.

With its ability to fuel the body and encourage muscle growth, dextrose can be used as either a weightlifting supplement or nutritional supplement for hospitalized patients. Monitoring daily calorie intake is essential for maintaining a balanced diet and ensuring adequate energy.

Sweet and sour chicken tends to be one of the less healthy options at Chinese restaurants because the dish consists of mainly breaded and fried chicken with a sugary sauce. However, you can find lower calorie versions in the frozen food section or make your own version at home.

Licking the back of a postage stamp may seem a perfectly innocuous activity for calorie-counters and dieters, but lick enough of them and the calories may start to add up, especially if the stamps are British and larger than normal.

You weight determines the number of calories you need to maintain that weight. With that number, you can calculate how many calories you need to gain or lose weight, too.

Green juices contain dark, leafy vegetables like kale and spinach, and are typically chock full of vitamins and minerals. However, most of these beverages also contain fruit juices or purees to balance out the vegetable flavor and to add sweetness. Fruit adds sugar, and is generally more calorie-dense than vegetables.

Starting off your meal with a broth-based vegetable soup is a way to make your meal more filling without adding a lot of calories because these soups tend to be low in energy density, or calories per gram. Try a soup made with Japanese noodles, called udon, to add variety to your meals.

How many calories a person needs to eat each day for optimum health depends on many factors, such as sex, height, age and genetics. Researchers can find the average calories that a population eats through surveys and calculating the calories per capita.

The term “lady fingers” is a nickname for okra, a small, long green vegetable. Okra’s texture and appearance can be off-putting for cooks who aren’t sure how to handle the vegetable, but it boasts admirable nutritional value and a significant store of healthful vitamins and minerals.