The relationship between consuming hot foods or beverages and the resulting changes in internal body heat and energy expenditure is a straightforward consequence of basic thermodynamics and biological homeostasis, requiring no specialized citation.
The claim asserts a fundamental physical and physiological truism: adding thermal energy (hot food or beverages) to the human body involves basic thermodynamic heat transfer and energy exchange. Under Step 0, statements that are trivially true by definition or everyday observation are classified as COMMON_KNOWLEDGE, requiring no citations.