What are some small, underrated things that instantly make a guy more attractive?

I’ve been thinking a lot about self-improvement lately, and it got me wondering—what are some of the small things guys do that instantly make them more attractive, but they might not even realize?

Not looking for the obvious stuff like “be confident” or “be funny,” but more subtle green flags.

For example, I’ve noticed that when a guy remembers small details and brings them up later, it’s surprisingly attractive. Or when someone has good posture and a calm, collected energy, it changes how people perceive them.

Curious to hear what you all think—what’s something that takes a guy from average to damn without him even realizing it?