What is the origin of the term sweating bullets?

The term "sweating bullets" likely originates from the anxiety and stress associated with high-pressure situations, where one might feel so tense that they metaphorically "sweat" bullets. It may also draw from the imagery of bullets being hot and heavy, suggesting that the weight of stress can feel physically manifest. The phrase gained popularity in the 20th century, often used to convey extreme nervousness or fear. Its vivid imagery effectively captures the intensity of such emotions.