All our human activities could possibly be summarized into three distinct categories:
These activities does not require an individual to create anything or exert any intense effort with their body. Instead, the individual observes with their senses, interacts with an already created object, examines objects in further detail, and/or appreciates what is perceived before them. Examples include: reading, appreciating art, watching TV, playing a video games with a hand controller or keyboard.
These activities requires that an individual creates something whether with their hands or a tool of some sort, where a tool may range from sculpting tools to computers and circuitry. Examples include: writing a story, creating an artwork of any type, creating a computer programing, making a robot, writing an essay, composing music.
These activities requires an individual to use their body with or without the help of an outside object to interact with their environment. Examples include: playing an instrument, hiking, biking, playing a sport, playing a video game that requires bodily movement such as with a Wii controller.
Some may argue that playing video games may not classify under exertion activities, especially with the Nintendo Wii on the market today, which is why I specified when I used video game as an example for both passive and exertion.
I’m sure some activities could be seen as crossing over from one category to another, but then nothing is ever as simple as we, humans, may try to force it to be. There’s always a complexity to life that makes classifying things a challenge but at the same time allowing life to remain interesting.