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Two kiwi fruit an hour before bedtime may improve sleep quality and duration, without the side effects associated with sleeping pills.


The number one question in sleep research is "Why do we sleep?"—followed by the question, "How much sleep do we need?" After literally hundreds of studies, we still don't know the best answer to either question. A few years ago, I featured a large 100,000 person study suggesting that "Both short and long sleep duration were associated with increased mortality," with people getting around 7 hours of sleep living longest.
Since then, a meta-analysis of all such studies including more than a million people was published, and they found the same thing. We still don't know, though, if "sleep duration is a cause or simply a marker of ill-health." Maybe, sleeping too little or too long does make you unhealthy. Or, maybe we see the associated lifespan shortening because being unhealthy causes you to sleep shorter or longer....