The guiding principle for promoting optimal circadian entrainment and sleep is

The guiding principle for promoting optimal circadian entrainment and sleep is
A . sunlit days
B . dim light at night
C . continuous intense light
D . periods of light and darkness

Answer: D

Explanation:

To maintain optimal, properly synchronized circadian rhythms, the body requires periods of both light and darkness. Light exposure stimulates the circadian system, which regulates physiological rhythms throughout the body’s tissues and organs, such as hormone levels and the sleep-wake cycle.

Disruption or desynchronization of the circadian rhythm has been linked with obesity, diabetes, depression and metabolic disorders.

Reference: Standard | WELL V2, Light Concept, Background

Circadian lighting design | WELL Feature LIbrary – v2, Feature 54, Part 1