European clocks will be dialled forward by one hour tonight. This clock-switching ritual is not just pointless, but also deadly: heart attacks rise by about 24% in the days after the spring forward. Let tonight be the last time that it ever happens (and not because we end up in a nuclear holocaust).

In any case, it is best to focus on natural rhythms—like heartbeats, sleepiness, the sun’s position, and outdoor brightness—instead of paying heed to the clock time. Alarm clocks destroy sleep quality by agitating the body into overriding its ideals; I’ve actually had a nightmare about having to wake up to one.