I find sleep masks help me to get the full 8 hours. Without being able to sense light, I guess my body assumes it should still be asleep and I usually don't wak

I find sleep masks help me to get the full 8 hours. Without being able to sense light, I guess my body assumes it should still be asleep and I usually don't wake up early. It doesn't work every time, but it works often enough for me to try to stick to it.