What should a person wear during a sports activity?

protective gear may need to be worn, such as helmets or American football body armour. Sports fabrics are technical materials which help to keep the wearer comfortable during exercise.

Protective gear should be worn during a sports activity for protection against impacts. For example, head gear, knee, shoulder, and elbow pads, and mouth guards are all types of protective gear worn during sports.

Explanation:

The specific gear depends on the activity.

your question is incomplete

explanation:

an informal structure in a bureaucracy would be something like so-called "office politics". where there's a formal structure set up for the organization, but then an informal subculture as well that has a way of organizing the bureaucracy further. this can be positive because it sets up an added degree of organization, albeit informal, within the bureaucracy.