👉 Chronotropism is a biological concept in which organisms have an internal clock that regulates their metabolic rate and energy expenditure. This means that during periods of high temperature, such as summer or winter, the body will produce more heat to maintain its core temperature; this process is called thermogenesis. During these periods, the body's metabolic rate increases, leading to increased energy expenditure. The term "chronotropism" refers to a specific biological mechanism by which organisms regulate their internal clock and energy expenditure

chronotropism