Calm does it in a calm way

WHAT do trains and a good night's sleep have in common? Apparently, stories about the former can bring about the latter.

Just take Calm, the award-winning mobile app that helps people to relax, meditate and sleep.

There must be at least five Sleep Stories about trains on the app, making trains the most common theme among the stories, with titles like The Cornish Riviera Express, The Trans Siberian Railroad and The Nordland Night Train. These are soothing tales of train rides along some of the world's most scenic railways.

Sleep Stor…