Melannie Gregersen explains why men who stay calm under pressure seem more attractive to women. Handling stress with composure reads as confidence, which is what draws people in.
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When you handle stressful situations with composure, that shows that you are confident. It's a very masculine thing. It helps her feel sheltered and protected by you. It also helps her understand that you are a man she can trust. Someone who easily flies off the handle is the kind of guy who scares women. But a man who can stay cool under pressure, who can handle the situation appropriately, that is a very attractive trait. So yeah, something as simple as staying calm under pressure she can be like standing off to the side going, "Oh my goodness, he's so hot."