Kristiaan D’Août is a biomechanist with a Zoology background and a long-standing interest in human locomotion. He received his PhD in Zoology/Biomechanics in 1999. He was a Research Associate at the University of Antwerp (Belgium) from 1999 to 2013. He joined the University of Liverpool in 2013. He works in the Evolutionary Morphology & Biomechanics Group of the Institute of Life Course and Medical Sciences at the University of Liverpool. He is equally interested in ultimate questions (how did walking on two legs evolve?) and in proximate questions (how do things work here and now). Currently, his work focuses on taking human locomotion research beyond the simplified conditions we have usually focused on, i.e., walking in a straight line on a flat substrate. These are not the conditions in which we evolved, and these are also not the conditions we encounter in day-to-day activities. He focuses on the mechanical behavior of the foot. He is also passionate about representing human diversity better in biomechanics. His projects include lab work on complex substrates, the effect of footwear on walking, with a focus on minimal shoes, and fieldwork in Europe, Asia and Africa with various indigenous populations. He has a great interest in how gait is affected during healthy aging and in disease.