Why We Walk Guest: Shane O’Mara, Professor, Experimental Brain Research, Trinity College Dublin, and author, "In Praise of Walking: The new science of how we walk and why it’s good for us" “Take a walk” is a pithy and classic phrase of de-escalation that is ironically sometimes escalatory in nature. But it's good advice and here's why. Race Walking Guests: Jeff Salvage, race-walking coach, founder, racewalk.com, and former international competitor; Miranda Melville, Olympian race walker Race walking is a serious sport for serious athletes. It is distinguished from running by keeping one foot on the ground at all times. Fastidious form is paramount, and it's helpful for everyone to learn how to do it as they age. Marcus Smith wonders if it's a sport he should take up.