Ancient Rome is probably most familiar to people for the toga. The toga is an article of clothing resembling a robe. The toga is wrapped about the body in a particular way like this.
As you can see, the toga is wrapped about the body so that it leaves the right shoulder and part of the chest exposed. This is not a fashion statement. Just like all the other inventions in human culture, this one is based on something from within the human body.
If a person develops in a particular way, the inside of their body will feel like this picture looks. It will literally feel as if there are folds of skin or muscles that hand and swing off of the arm. The chest will literally feel bare and exposed as it is on the right shoulder.
The interesting part of this is that the clothing can train the person. If a person does not feel these sensations within their body, by wearing the toga, over time they will notice the similarity in the way the cloth toga feels and the sensations they receive from within their body.
I feel it is also important to note that this training effect can be good and bad. A person who feels inside of their body like the toga looks, the right shoulder open and exposed, will think and feel in a particular way. Their minds are molded and shaped to ONLY think in specific ways. These people would have great difficulty in thinking outside of the area of the brain that is stimulated or revealed by the pattern of the toga.