A non-invasive method comprising positioning a first electrode on a lower end of a lower leg, a second electrode on the lower leg, and a third electrode on an upper end of the lower leg, whereby the first and third electrodes are disposed on opposite ends of the lower leg, and the second electrode and one of the first and third electrodes are disposed on a same end of the lower leg； effecting a sequence of muscular contractions of the lower leg by (i) applying a first electrical impulse between the electrodes on the same end of the lower leg to induce a first muscular contraction and (ii) applying at least a second electrical impulse between the first and third electrodes to induce a longitudinal muscular contraction； and repeating operations (i) and (ii), to repeatedly induce the contractions, to effect the increased flow of blood.
