This was the great philosopher's school which practiced physical education. He famously stated how one needs to have mental and physical health and that they do not split.
This man was known as the father of gymnastics and basically created the need for PE.
Soccer has been an influential sport across the world.
This is a massive turn in history making gymnastics an olympic sport. This opened up the eyes of many people to the benefits of exercise in life.
After WW2 it was an apparent need for physical education so it was made mandatory. This was only the case for men though at the time.
PE is now a large part of growing up.