The body is made to wake up with the sunlight. I really hate getting up in the morning when it’s dark in my bedroom. Thats particulary bad in the winter when the sun rises after I should get up, but also in the summer, because I have very light tight curtains.
A dawn simulator is a light that gets slowly on in the morning to simulate a dawn and let the body wake up very smoothly.
There are many dawn simulators out there to buy, but I wanted to build one on my own for quite some time and now I did it.