Men :: do u like your women soft or muscular (well toned and tight)?

i'm 5'8 and i weigh 50 kgs. i don't really work out much other than jogging and im well toned. this never bothered me till a friend of mine hugged me and said that i have real soft body and that i should start working out as soft bodieson women are now a turn off and men usually prefer muscular tight ones. is this true?