The #Japanese say the sole of the #foot is your second heart. About two-thirds of leg muscles work together to pump blood back towards the #heart. #Veins concentrate in the #sole. Properly #pressing &amp; stimulating them promotes #blood flow, supporting #heart function. This can been seen by the image on the left, following an experiment carried out by the Shizuoka Industrial Technology Centre to compare sole surface temperature on someone who wore Kenkoh health sandals for 30 minutes.