y do v cry at movies

y do v cry at movies
or y do v laugh at movies
y do v get so involved in the movie
"crying" is the thing tht involves so much of ur emotions n feelings
v dont cry for small things in r life
v dont even cry tht much when something bad happens 2 others
but how is it ,v sit in the movie hall for jus 3 hrs n if hero dies y is it v cry
i mean how???????
well even 4 laughter
v have so many tensions, worries, problems but once u go catch a comedy scene thats really funny u tend to laugh even when ur on tears
how is it possible for the mind to change itself so quickly
thats also with something so impersonal
its understandable if i am crying abt something and i get a news that i topped my college its possible that i can become happy
or if i am happy abt my results and that moment my bf dumps me then its possible i get sad
but movies, bookshow cud somethin so unrelated make u feel so muchits confuses me.........
have u ever wondered abt this???
or if ur wonderin right now abt this????
pls post ur comments on it plsssssss