If you're finding cats as you open magazines, you're being much too hasty in your tidying up.
Catz have a tendency to be wherever the “action” is. Magazines, fridges, books, cupboards, bookcases....carseats, recliners (usually where they can immediately be used as a siren as soon as the occupant reclines) and beds.
Often the only throw rug in a doorway will contain a cat that is glued to it.