Gymnastics can be traced to exercise in ancient Greece- in Sparta and Athens. That exercise for that time was documented by Philostratus' work "Gymnastics". Exercise in the gymnasium in later dates prepared men for war. The original term for the practice of gymnastics is from the related verb γυμνάζω (gymnazo), which translates as "to exercise naked" because young men exercising trained without clothing. In ancient Greece, physical fitness was a highly valued attribute in both men and women. It wasn't until after the Romans conquered Greece in 146BC that gymnastics became more formalized and used to train men in warfare. Based on Philostratus' claim that gymnastics is a form of wisdom, comparable to philosophy, poetry, music, geometry, and astronomy, Athens combined this more physical training with the education of the mind. At the Palestra, a physical education training center, the discipline of educating the body and educating the mind were combined allowing for a form of gymnastics that was more aesthetic and individual and which left behind the form that focused on strictness, discipline, the emphasis on defeating records, and focus on strength.