Circadian Rhythms and Their Influence on Weight Training Effectiveness

Circadian rhythms are biological processes that display an endogenous, entrainable oscillation of about 24 hours. A circadian clock drives these rhythms, widely observed in plants, animals, fungi, and cyanobacteria. For humans, circadian rhythms can significantly influence sleep-wake patterns, hormone release, eating habits and digestion, body temperature, and other critical bodily functions. In physical fitness, especially weight training, the interplay between these rhythms and exercise can profoundly affect performance, recovery, muscle growth, and the likelihood of injury.