6 PM, Châtelet, 35°C: I Tested an Air-Conditioned Refuge 4 Minutes from the RER to Avoid a Meltdown

A commuter's survival story. To escape the hell of an overheated RER at Châtelet, I tested a radical solution: a 2-hour break in an air-conditioned haven 4 minutes from the platform to shower and decompress. Here's the verdict.