Lighter than a bar of soap: The 99g 'super shoes' Sabastian Sawe wore to shatter marathon record

Rapid developments in sport science in the last 20 years have run alongside the technological improvements in racing shoes. Simply put, we know more than ever how to 'beat the wall' and to keep glycogen levels topped up throughout 26.2miles. In Sawe's case, a research team from sports nutrition brand Maurten spent 32 days with the Kenyan across six trips in the last 12 months. …