If you are indoors, stay there. Quickly get under a desk or table, stay clear of windows or any object that could fall. Shield you head and face from falling glass and debris. Watch for falling objects. If the desk or table moves, move with it.
Furniture can provide air space if the building collapses.
If you cannot get under furniture, crouch in an inner corner or a doorway. Do not run for another room. If you are in a kitchen, turn off stoves and quickly take cover. If you are outside, stay there. If possible get into the open, away from buildings, trees, walls, and power lines.