How to tell at a glance if a man has strong desires?

The focus is not on muscles, not on tattoos, but on "quietness."
One of the most typical types: thirty-five or six years old, within the system or middle management at a state-owned enterprise, with a marriage as stable as a dead water.
They dress appropriately but not flamboyantly, shirts always tucked into their pants, belts are understated dark colors.
Pay attention to their wrists: either they wear an old-fashioned mechanical watch or nothing at all, but the cuffs are always buttoned tightly.