i've become a quite cynical fellow over the years myself and as a member of the "wave" i can give you some "inside" info. for the most part, nobody really cares about what you do or achieve if it doesn't affect them in any certain way. as someone who shrugs more than you would do dumbbell shrugs at a gym on a daily basis i can tell you hearing about someones life makes me go "oh ok" "yeah, idk *shrugs*" or something similar out of instinct. as for the people who talk about working out, i just don't really care in general, "good for you", thats why i never speak about myself working out, cause i know for a fact that nobody cares. you could just say everyone is selfish or self-centered in a way.