ionic footbath- some are connected to body w/ current running out feet to plate ?

hi,
looking at many of ionic foot baths, most seem to be putting both polaritys in the water. that is the postive and negative charge is going thru two pieces of metal in the water, ie plates or spoons..
then there are some that require the person to hold one of the polaritys in their hand or connect to the body thru muscle stim pad such that the current runs thru the body out the feet thru the water and to the other polarity connected to some plate anchored in the water..

so, this would have different effects for sure.. whether both electrodes are in the water, or if one is directed thru the body to "pull" out toxins..
anybody know about the different effects of these two ways of doing the ionic foot bath ???
i am interested in making an ionic foot bath but havent found any clear distinction on which way to go with this ?? Tweet