Well,We all have seen or played with a magnet.It is in general known to everybody that magnet attract particular substance ,they also attract each other (repel in case when kept same poles same side) when kept in a certain area and this certain area is magnetic field.Now the question teasing my mind is that why a magnetic field produced???What is inside magnetic substances (I mean is there a kind of core which vibrates to produce magnetic field,or may be something else).

Finally,The question i m asking is that why a magnetic field is produced and what is so special with magnetic substances???