its a natural response to rythm. you tap your feet to a song? thats dancing, except that you have limited your bodies movements to just your foot. bobbing your head is dancing. if the rythm gets into your blood and bones then it wants to dance. whether you let it or not is up to your brain
i went to college with a lot of deaf students since once of the largest colleges for the deaf was associated with my college. i got to know some. a whole bunch of deaf people would go out to bars to see bands play or to night clubs and they would dance their a$$es off without even hearing the music. they could feel the bass and kick drum hit them like a wave. pretty amazing
i was playing guitar in front of my friends 11 month old baby the other day. the baby was standing in front of me bouncing with the beat. amazing.