‘For us, as well-trained athletes, to take on that challenge physically was pretty tough,’ said Peter. ‘We work for a short amount of time in our international races but, for the girls, it’s a four-hour slog every day. It’s pretty hard work. For them it’s a physical challenge because they are so young, but it’s also a mental challenge of doing it and repeating it, of doing it all the time’

Source: The Guardian August 15, 2016 12:33 UTC