Metabolism is the process through which your body turns the food and beverages you consume into energy. Even when you're sleeping, your body need energy to do all of its "invisible" operations, such as breathing, circulating blood, changing hormone levels, and growing and repairing cells. Metabolism also plays a role in how we feel physically by producing certain chemicals that can make us happy or sad, sleepy or excited.
The three main types of metabolism are: aerobic metabolism, anaerobic metabolism, and cellular metabolism.
In aerobic metabolism, the majority of cells in the body are able to use oxygen to burn fuel for energy. The two main classes of cells using this method are the muscle cells and the brain cells. Aerobic metabolism produces energy for cells to function properly. It is this type of metabolism that increases during exercise.
Anaerobic metabolism occurs within the muscles and intestines and does not require oxygen to function. Some examples of anaerobic metabolism include burning sugar for energy after intense exercise or when the body lacks oxygen (such as at high altitudes or while under water). Anaerobic metabolism is responsible for getting your body back on track after aerobic metabolism has used up all of its available fuel. For example, after exercising hard aerobically, your body will switch to using anaerobic metabolism to provide energy for continuing to function properly.
Metabolism refers to all of the chemical activities that occur continually inside your body in order to keep you alive and your organs operating regularly, such as breathing, cell repair, and digestion. These chemical reactions need the use of energy. Your body uses three main methods for obtaining this energy: aerobic exercise, anaerobic exercise, and metabolism.
Your metabolism is the rate at which your body uses energy. It is measured in units called "metabolic equivalents" or "METs." The human metabolic system is very efficient at processing food into energy. Your body can use different types of fuel, including carbohydrates, proteins, and fats. The two main factors that affect how fast your body uses up these fuels are the amount of food you eat and the intensity of your activity. As you eat more calories than you burn off through exercise, the excess calories are stored away for future use. This is why eating a lot of food is important for keeping your weight down. The more energy your body has available, the more active it will be able to be.
Your body is always trying to maintain a steady temperature. It does this by using various mechanisms to either heat or cool down the body as needed. For example, when it's cold outside, your body heats up by breaking down some of its own fat for energy. This causes levels of cortisol in your blood to rise.
Your metabolism is the mechanism through which your body generates and expends energy from food. Your metabolism allows you to breathe, think, digest, circulate blood, remain warm in the cold, and cool in the hot. It's a frequent misconception that increasing your metabolism helps you burn more calories and lose weight. Actually, changing your metabolism would require you to change something in your DNA, which is not possible.
The main factors that affect your metabolism are your age, gender, height, weight, muscle tone, bone density, lifestyle, environment, and genetics. Age can be a factor in losing weight; as you get older, your metabolism slows down. This is normal and not a cause for concern. There are several studies showing that men may have a higher metabolic rate than women. However, this difference is not very large (about 20 percent) and is likely due to different body sizes of men and women. Height and weight also play a role in determining your metabolism. People who are taller or heavier than average have higher rates of metabolism. A study of more than 1,000 people found that each additional inch in height increases the rate of metabolism by about 4 beats per minute while each additional 10 pounds increases the rate of metabolism by about 15 watts (electricity used by the body). Muscle mass also plays a role in determining your metabolism because it uses up more energy than fat tissue. A study of obese people showed that those who were also lean used their energy more efficiently than those who were only obese.
Meh-TAB-uh-liz-um refers to the chemical processes that occur in the cells of the body to convert food into energy. Our bodies require energy to perform everything from move to think to develop. The chemical processes of metabolism are controlled by certain proteins in the body. Changes in these proteins can change how efficiently our bodies use nutrients such as sugar and protein. Changes in metabolism can also affect some diseases, such as diabetes and cancer.
Metabolism is the set of all the biochemical reactions in an organism or cell that transform molecules obtained from ingested foods into energy for cellular functions and tissue maintenance. Metabolism is thus the series of chemical reactions that take place in living organisms to break down and use nutrients, especially carbohydrates, fats, and proteins. It is generally considered to be the mechanism by which energy is stored in cells and tissues, transformed into different forms for usage, and eliminated as waste.
An organism's metabolism is the sum of its various cellular metabolism processes. A cell uses the metabolic pathway to break down macromolecules into their basic components - amino acids, sugars, lipids, etc - which it can reuse or expel as waste.