Read the passage and answer the questions:
Modern research increasingly underscores the indispensable role of sleep in maintaining cognitive function, emotional stability, and physical health. Sleep is not a passive state of rest but an active, meticulously orchestrated biological process involving intricate neural and hormonal regulation. During sleep, the brain undergoes vital activities such as memory consolidation, synaptic pruning, and the detoxification of metabolic waste. Deprivation or disruption of this process has been conclusively linked to a heightened risk of chronic illnesses, including cardiovascular disease, diabetes, and depression.
Establishing a consistent sleep routine is pivotal in optimizing the quality and restorative power of sleep. Erratic sleep schedules, often exacerbated by artificial lighting and digital device usage, desynchronize the body's circadian rhythms—an internal clock that governs sleep-wake cycles. This misalignment can lead to a condition known as social jetlag, wherein individuals experience chronic fatigue and impaired performance due to conflicts between biological and social time.
Experts advocate for the cultivation of disciplined habits: retiring and rising at the same times daily, creating a dark and cool sleeping environment, and disengaging from stimulating activities at least an hour before bedtime. Moreover, while occasional short naps may be beneficial, reliance on irregular napping patterns can further fragment night time sleep and erode circadian stability. Ultimately, treating sleep with the same seriousness accorded to nutrition and exercise is essential for fostering resilience, productivity, and long-term well-being.
Choose the correct relative clause connector:
"This misalignment can lead to a condition _______________ individuals experience chronic fatigue."