Final answer:
When the temperature outside is high, people experience a state of arousal. This is because our bodies have an internal thermostat that senses the temperature change and triggers responses to decrease body temperature. Factors like humidity can also affect our perception of temperature.
Step-by-step explanation:
When the temperature outside is high, people experience a state of arousal. This is because our bodies have an internal thermostat that senses the temperature change. When our body temperature rises, receptors in the skin and brain send signals to decrease body temperature through responses like sweating and dilation of blood vessels near the skin surface.
In addition to temperature, factors like humidity can also affect our perception of temperature. On hot and humid days, sweat does not evaporate efficiently, making us feel hotter. Conversely, on hot and dry days, the evaporation of sweat cools us off.