The Department of Physiotherapy of the University of Valencia, in collaboration with the Institute of Biomechanics of Valencia, has determined the limit pressure point to which different parts of the foot can be subjected before feeling discomfort. These values vary depending on age, gender, or body mass index. The base of the big toe is the weakest part, and the heel is the area that holds the most pressure. Around the age of 65 there is a turning point with respect to pain tolerance in the sole of the foot. As a novelty, this study has focused on discomfort, a precursor to pain, unlike other research that has looked at the point where pain begins.