Which position of two magnets results in the greatest attraction between the magnets?

Opposite attracts each other. Thus when the north pole of the  magnet faces the south pole of the magnet and that too with right orientation  such that the magnetic field produced by them intersect the maximum thereby producing strong magnetic field. While in case when the same poles of two magnets face each other then a repulsion force is produced and the magnets move away.

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.