Thermogenesis
Thermogenesis refers to the body's heat production, which uses energy and is part of daily total expenditure.
Thermogenesis, or heat production, is an important part of the body's metabolism and energy expenditure. It is divided into several forms, the most important being the thermic effect of food (TEF) and non-exercise activity thermogenesis (NEAT).
The thermic effect of food refers to the energy the body uses to digest food and process nutrients. Protein requires the most energy (20-30% of its calorie content), carbohydrates less (5-10%), and fats the least (0-3%). This is one reason why a high-protein diet supports weight loss.
NEAT thermogenesis covers all daily movement: walking, cleaning, restless fidgeting, and even unconscious movements. Individual differences in NEAT can be up to 2000 kcal per day, which explains large differences in people's energy expenditure.
Basal metabolic rate accounts for the largest portion of heat production at rest. Understanding the different forms of thermogenesis helps visualize how TDEE is composed and what methods exist for increasing energy expenditure.
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Disclaimer: This page contains general health and wellness information and does not replace the advice of a doctor, dietitian, or other healthcare professional. Always consult your doctor before making significant changes to your diet or exercise routine, especially if you have underlying health conditions, are on medication, or are pregnant.
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