Many people spend their entire workday sitting down, typing on a keyboard.
Sitting all day is generally considered to be sub-optimal for human health, and typing on a keyboard (Figure 1) may lead to certain types of repetitive stress injury.
In order to fix this, we need a way to allow keyboard-focused workers to get exercise during the course of a normal workday.
Instead of pressing a single key in order to type a letter, what if a person had to lift a weight or hit a punching bag instead?
In Figure 2, we can see how a keyboard might be converted to an equivalent home gym, with a punching bag for the space bar, overhead bars for certain keys, free weights for the enter key, etc.
Now that enthusiasm for standing desks has waned, there is room for this to be the next office fitness fad.
PROS: Allows people to get exercise during their normal workday, thus increasing national fitness.
CONS: Office workers may trade repetitive stress injuries for more dramatic injuries.