[ConservativeMind]

Because these people already had the late to bed habit, but none had Type 2 diabetes.

It’s in the text.

[higgmeister]

Of course I knew that.   I retired after forty years in telecommunications.   In that field, all the real work gets done when the subscribers are in bed.   The last ten plus years I was an internationally focused program management consultant up at all hours of the night to coordinate with cities in Europe and Asia.   So after forty years my circadian rhythm was not only out of adjustment, it was obliterated.   But the truth is, I came to love the peace of silence at night.