Many chronobiology studies state that "circadian clocks are an adaptation that enhances fitness". But are we sure? How do we know this? A multi-lab team @M_louisae @danichitrang @KamielSpoelstra @ant_dodd Carl Johnson review the evidence in #jbr, "Evaluating the Adaptive Fitness of Circadian Clocks and their Evolution":

https://journals.sagepub.com/doi/10.1177/07487304231219206