the arteries gradually become narrower, the legs receive insufficient oxygen-rich blood at the moment that they need it most – during exercise. That causes pain when walking, which disappears immediately again when standing still. This condition is known medically as intermittent claudication (from the Latin claudicare, ‘to limp’), but in Dutch it is appropriately called ‘window-shopping legs’, referring to the fact that the pain of walking down the street will subside every time you stop to look in a shop window.
