Seeking or avoiding light: Relations between sleep, sleepiness, fatigue and subsequent light exposure.

Sleep and insomnia: The paper investigates the relationship between sleep duration, sleepiness, and fatigue and subsequent light exposure, suggesting that these factors can influence light exposure patterns.

Alertness and performance: The paper discusses how light exposure can acutely increase alertness during the day and improve sleep quality during the night.

Cognitive function and memory: The paper briefly mentions that poor sleep can result in impaired memory.

Lighting Design Considerations: The paper discusses how light exposure preferences can be realized more easily nowadays with the advent of smart lighting and a trend towards flexible and hybrid work environments due to the COVID-19 pandemic.

Well-being: The paper suggests that understanding the impact of sleepiness on light exposure patterns may lead to the creation of light-based interventions and preventative strategies that harness the benefits of light for health, promoting healthy lifestyle and sleep hygiene.