Deep sunset color helps melatonin secretion and sleep quality improvement.

Using blue light blocking glasses improves the productivity of people’s work, almost a 7% increase in productivity just by wearing approximately 2 hours before bed.
—— Harvard Business

Being exposed to blue light before bed causes students’ poor grades. Students who got poor grades were found to have slept on average 25 mins less and went to bed 40 mins later than those who got A’s and B’s.
—— Emmy Wolfson.