Circadian Rhythms in Health and Disease, Volume 393 in the International Review of Cell and Molecular Biology series, highlights new advances in the field, with this new volume presenting interesting chapters written by an international board of authors. Chapters in this new release include Circadian Rhythms in Cardiac Health and Disease, Liver as a nexus of daily metabolic cross talk, Non-rhythmic modulators of the circadian system: A new class of circadian modulators, The emerging role of circadian rhythms in exosome-mediated cellular crosstalk, Circadian rhythms and muscle health, and Output circuits from the suprachiasmatic nucleus controlling diverse physiological functions.