Yeah, I agree.<p>In the winter, I&#x27;m more inclined to go to bed early, be up for a bit in the middle of the night, and then sleep until dawn. So my sleep isn&#x27;t continuous, but neither is it disrupted externally.<p>I suspect the original experiment was reasonable if you&#x27;re looking to measure the effects of extreme disruption. But the WSJ article suggesting it applies to other sorts of non-continuous sleep strikes me as bunk. Up until the invention of the electric light, non-continuous sleep was the norm. But anxiety sells papers, and people are certainly inclined to be anxious about sleep lately.