Sutian Dong from firstMark

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The human body is a complex and highly adaptable machine that has been shaped by millions of years of evolution to withstand a wide range of environmental conditions. From scorching heat to freezing cold, humans have learned to adjust their physical behavior to stay safe and healthy in almost any situation. For example, when the temperature rises, humans sweat to cool down, while in colder temperatures, they shiver to generate body heat. This ability to adapt is just one of many reasons why humans are considered one of the most resilient species on the planet.