[slfnflctd]

Regardless of that reality, circadian rhythms have been extensively studied, and there is more evidence than just this study to support the claim they're making. Patterns and routines are generally beneficial as a rule.

That being said, there is a lot of diversity amongst us, and I'm quite sure that when you factor in (epi-)genetic variation - particularly in the short to medium term - there are some unexpected advantage/cost ratios to wildly different strategies.