Wu Youyi, Wuqinxi, what did it mean in ancient times?

"I have a skill called Wuqinxi. One is called a tiger, the other a deer, the third a bear, the fourth an ape and the fifth a bird. It is also used to eliminate diseases and sharpen hoofs and feet as a guide. " From Chen Shou's The Three Kingdoms Hua Tuo.

I have an exercise method called "Five Birds Play". One is called Tiger Play, the other is called Deer Play, the third is called Bear Play, the fourth is called Ape Play, and the fifth is called Bird Play. It can also be used to prevent diseases and cure diseases, and at the same time make legs and feet light and agile. It can be used as "Qigong" (or exercise).

Wuqinxi is the originator of aerobics.