Do VELUX skylights really help balance sleep cycles?

The sun sets the day/night phase of our circadian cycle. When the sun rises, we tend to wake up, and when the sun sets, people tend to get sleepy. But this schedule can be misaligned without exposer to enough daylight. 

Skylights help bring in more natural light. This has been proven to balance circadian rhythm, which controls everything from sleep patterns to appetites and brain activity. When the circadian rhythm is aligned, people tend to fall asleep faster and sleep more deeply. This can lead to a better mood and reduced anxiety.