How does caffeine consumption influence metabolism?

Caffeine consumption is known to temporarily increase metabolic rate primarily due to its stimulant effects on the central nervous system. When caffeine is ingested, it stimulates the release of adrenaline, which can enhance the breakdown of fats and increase energy expenditure. This thermogenic effect contributes to an elevation in the metabolic rate, meaning that the body burns more calories even at rest.

Research has shown that caffeine can enhance exercise performance and lead to greater fat oxidation during physical activity, further supporting its role in boosting metabolism. It also increases levels of certain neurotransmitters, such as dopamine and norepinephrine, which can enhance mood and energy levels, contributing to increased physical activity and energy utilization.

Other options suggest a lack of effect, a decrease, or a complete halt to metabolic processes, which do not align with the well-documented physiological effects of caffeine on metabolism. Caffeine's role as a mild stimulant is well established in nutrition and exercise science, making the choice of temporary increase in metabolic rate the correct interpretation.