The kavadi ritual is a ritual that found its roots in the indian subcontinent.
Here, the people want to show their devotion to the gods. by inflicting pain to the mortal body, they encrease the connection to the mind. By being aware of the body and mind, as seperate enteties, the connection to the gods and path to the enlightment becomes more clear.
But this in not the only place where the ritual has a long histoy. In south amerika they also used this ritual to come into contact with the forest spirits.
The kavadi is a ritual where spears, pointed objects, are put into the skin, to stay in position and put pressure on nerve-endings. the nerves will tell the brain to produse natural endorfines. the longer the points stay in the the body the more of these endorfines will be produced. the body creates these hormones to protect the body if its in pain. for expl. after an excident, endorfines numb your body a bit so you can get into safty or for help...
in these rituals the endorfine will put your mind into a stade of trance, conparisible to long meditation. Wether your experienced with this or not, it will awaken your subconsiousness for sure.