The more bodyfat you have over the muscles you are trying to stimulate the higher the electrical resistance. Leaner people will thus have to use lower mA, and areas with a thicker layer of fat (e.g. glutes) can tolerate higher currents.
The more bodyfat you have over the muscles you are trying to stimulate the higher the electrical resistance. Leaner people will thus have to use lower mA, and areas with a thicker layer of fat (e.g. glutes) can tolerate higher currents.