Heat Stress Visual Guide - Understanding Thermal Discomfort Levels #278271 (License: Personal Use)

The image features five simplified stick-figure characters standing in a row beneath a radiant sun with outward arrows symbolizing heat. From left to right, their expressions and physical cues evolve: neutral → smiling → joyful with arms raised → slightly flushed → red, sweating, and frowning-depicting escalating thermal discomfort. This visual metaphor effectively communicates physiological and emotional responses to environmental heat.

Commonly used in public health campaigns, workplace safety training, climate resilience guides, and educational materials to illustrate heat-related illness progression and promote awareness of heat exhaustion symptoms.