<p>Thermal stress caused by extreme heat or cold, challenges homeostasis and physiological limits of the body. However, through thermoregulatory mechanisms, the human body is able to adapt efficiently to both cold and hot environments. A growing body of evidence suggests that exposure to thermal stress may provide several health benefits, particularly in post-exercise recovery and in the management of cardiovascular or inflammatory diseases. Thermal strategies such as cold exposure and sauna bathing have been used for centuries to enhance recovery, with documented effects on improving cardiovascular health, reducing inflammation, and improving well-being. Although the effects of heat and cold exposures have been widely investigated, it remains uncertain whether combining these two stimuli offers greater, lesser, or simply different benefits compared with each modality alone. Relatively few studies directly compare these protocols. In this narrative review, we discuss the known therapeutic effects of heat and cold modalities, and explore their individual and combined physiological mechanisms. It also examines how contrast therapy may induce synergistic benefits or potentially negate the effects of each modality. While the combination of heat and cold therapy is promising, further research is needed to clarify whether the opposing physiological responses of each therapy may interfere with each other, thereby compromising their effectiveness.</p>