This led us to remember the world record for the most extended cave isolation of 366 days, conducted by Italian geologist Maurizio Montalbini. Montalbini's experience aimed to analyze the effects of living without natural sunlight and the constraints of regular social life on human psychology and physiology.Montalbini's experience significantly changed his sleep-wake cycle, where he adopted a much longer circadian rhythm than the usual 24-hour cycle. The absence of natural light caused alterations in his perception of time and disrupted his biological clock.
This study emphasized the crucial role of natural light in regulating human biological rhythms and the potential psychological impacts of extended isolation from the natural environment and social interactions.