This seems pretty random as usual.<p>There&#x27;s an easy test that applies to yourself only though. Go to a place without tv&#x2F;internet&#x2F;books (electricity is fine) for a week, where you exercise outdoors and spend time with people.<p>I always end up sleeping 2-3h more (from 6h regularly to 9h!), wake up earlier, and sleep earlier - and in fact, feel better.<p>Most of the rest is just the stress inducing work&#x2F;city life most of us zombies &quot;have&quot; to go through.