3) The tests carried out by the group of researchers consisted of taking the biofuel cells, connecting them to a handmade circuit board to match the energy that is generated by the biofuel cells, since it fluctuates with the amount of sweat present in the user, converting it into constant energy with a constant voltage to then attach the cells to the user and put him to make a stationary bicycle.
The results obtained were to turn on an LED lamp while the user exercised on the stationary bicycle.