Scientists have found that slow rhythmical oscillations of 4-12 Hertz per second are ideal for triggering the “emptiness mechanism” in the human brain. Which is why we tend to drift off during activities with a rhythmical element, whether that’s a meditation, with its measured breathing and mantras, or a journey by train. Some trains are better than others for achieving this agreeable state, the Royal Scotsman being one. It is an Edwardian-styled affair with tartan everywhere, on
