The process that maintains constant internal body conditions is called homeostasis. This regulatory mechanism ensures that variables such as temperature, pH, and electrolyte balance remain stable, allowing biological processes to function optimally. Homeostasis is critical for survival, as it helps organisms adapt to changes in their environment. For instance, when external temperatures fluctuate, homeostatic processes work to regulate body temperature through mechanisms like sweating or shivering. Failure to maintain homeostasis can lead to various health issues, demonstrating its significance in physiology and overall organismal health.