Wearing a wedding ring on the fourth finger
Most married people nowadays will wear their wedding ring on the fourth finger of their left hand, which is NOW known as the “ring finger”. You might give credit to the ancient Egyptians for this one.
They somehow believed the “vena amoris”, also known as “the vein of love”, ran through the ring finger, right to the heart. While that isn’t accurate from an anatomical point of view, it does give a beautiful meaning to wearing a ring on that particular finger.
The Romans tried this tradition, along with the giving of rings, in order to show love and commitment. As the majority of people are right-handed, this practice is supposed to “protect” the ring from wear and tear.