Give your example of a conditioned reflex, confirming the following provisions of the table

Give your example of a conditioned reflex, confirming the following provisions of the table:
– developed on the basis of life experience;
– changeable, that is, they constantly form and die out.

An example of a conditioned reflex is the increasing activity of students after a school bell. In response to a school bell, students abruptly get up from their desks. This conditioned reflex is formed on the basis of life experience. Later, when students graduate from school and become students, and the university does not ring bells, this reflex gradually fades.