This paper investigates the interaction between human physiological states and environmental systems within the Biosphere–Technosphere–Noosphere framework. The Biosphere, with its complex structure, maintains dynamic homeostasis in the face of internal and external disturbances. Through the lens of bioeconophysics, the study shows that human resource consumption –particularly food – is closely tied to the functional states of both the Biosphere and the Technosphere. Over the course of human evolution, metabolism has adapted to changing environmental and technological conditions. Although anthropogenic activities release increasing amounts of heat into the environment, an apparent paradox emerges: the average human body temperature has been gradually decreasing over the past century. This suggests a subtle but significant long-term physiological adaptation driven by shifts in environmental systems and lifestyle patterns shaped by technology. The results highlight the importance of interdisciplinary research to better understand the feedback loop between environmental changes and human biology. This integrated perspective offers new insights into how anthropogenic transformations affect biological systems and raises important questions about future human adaptability in a changing global environment.