Metabolism refers to all the chemical processes that occur as your body converts foods and drinks into energy!
It Never Stops!
Constantly providing energy for basic body functions.
The two metabolic processes are catabolism, the breakdown of nutrients from food, and anabolism, the building and repairing of the body.
Catabolism is the breakdown of food components (such as carbohydrates, proteins, and fats) into their simpler forms, which can then be used to provide energy and the basic building blocks needed for growth and repair.
Anabolism is the metabolic process in which our body is built or repaired. This process takes smaller units like nutrients, cells, or amino acids and bonds them together to create bigger structures. Anabolism requires energy that ultimately comes from our food.
Here’s the Skinny!
When we eat more than we need for daily metabolic processes, the excess nutrients are typically stored in our body as fat.
Doing a combination of anabolic and catabolic exercises is most effective for weight loss versus doing one or the other.
Catabolic exercises include aerobic activities like running, swimming, or biking because they use up energy by burning glucose and fat. Catabolic exercises are great for burning calories quickly.
Anabolic exercises include weightlifting, push-ups, and squats because they cause rebuilding and strengthening of muscle tissue. Anobolic exercises are great for burning calories over a longer period of time.
BMR, Basal Metabolic Rate
50%–80% of daily energy use
The BMR is the amount of energy your body needs to function while at rest. This includes basic functions, such as breathing, regulating body temperature, keeping the heart beating, growing and repairing cells, and adjusting hormone levels. This number varies from person to person because it is largely determined by total lean mass, especially muscle mass. Other factors that influence BMR include body size, body fat, age, gender, physical activity, drugs, and dietary deficiencies.
5%–10% of daily energy use
Your BMR increases after you eat because you use energy to eat, digest, and metabolize the food you eat. Different foods increase BMR by differing amounts. For example, proteins raise BMR the most (20%—30%) while fats raise BMR the least (0%—5%).
Dependent on physical activity level
This is the form of energy expenditure that we have the most control over. Energy burned during exercise varies from person to person based on weight, age, health, and activity intensity.
Fast Metabolism vs Slow Metabolism
Having a fast metabolism doesn’t always lead to being thin. Studies show that people who are obese or overweight often have fast metabolisms; after all, their bodies need more energy for everyday functions.