From: Why It's Cool for Males to Be Shirtless in Public: A Look at Culture, Biology, and Confidence
evidenceobservational

Going shirtless helps men cool down in hot weather by allowing sweat to evaporate more easily.

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The human body cools itself by sweating, which then evaporates from the skin and lowers body temperature. Wearing fewer clothes lets sweat evaporate faster. For men, who generally have more upper body muscle and sweat glands, going shirtless is an effective way to stay cool. This practical reason makes it common in warm climates and outdoor sports.

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Displaying the male torso can be a way to attract attention and show confidence in social settings.
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Social norms allow men to be shirtless in many public settings where women going shirtless is oft...
perspective
Historically, men going shirtless was often practical. In many agricultural or manual jobs, shirt...
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Why It's Cool for Males to Be Shirtless in Public: A Look at Culture, Biology, and Confidence
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