The way that the friend would make you feel due to her negative attitude is what is referred to as negative peer influence.
This is the term that is used as an opposite of positivity. This is the influence that a person may have from a friend based on the way that they act. If the person is unable to recognize this immediately, it may also start to have an influence in the ways that they act and in the things that they do.
Hence we can say that the negative influence is the negative attitude that makes you feel down whenever you suggest going to exercise even though she is going out of shape.
Read more on negative influence here: https://brainly.com/question/7659672
#SPJ1