We have nerves that sense cold, heat, pressure (touch), pain, proprioception (position of our body parts), smell, taste, sound, etc. There is a theory the human body may also be able to sense magnetic fields.
Birds and bees use magnetoreception to navigate, and there is evidence that frogs, worms, lobsters, and snails have magnetic sense. Some mammals, mice, rats & cattle, apparently have it too. Scientists have located and studied magnetoreceptors in certain bacteria.
A scientist at CA Institute for Technology (Caltech) thinks he has found a “magnetic sixth sense” in humans.
Whether we actually have it, how it might work, and what the implications might be are fascinating questions still unanswered. http://www.sciencemag.org/news/2016/06/maverick-scientist-thinks-he-has-discovered-magnetic-sixth-sense-humans
