Your observation about coffee's impact on metabolism is well-supported by scientific research. Caffeine, a primary component of coffee, is known to stimulate the central nervous system, which can lead to an increase in metabolic rate. However, it's important to note that while caffeine can provide a temporary boost in metabolism, its effects may diminish over time due to tolerance. Relying solely on coffee for weight loss isn't recommended, a balanced diet and regular exercise are more important components of a healthy weight management plan.