I’ve worked, and put in a lot of time underground, and that’s all the more I could take. Your schedual gets all screwed up. Sunlight? Nighttime? Your body doesn’t know the difference.

I found that it doens’t matter if it’s dark, or if it’s well lit with full spectrum lights. Working underground is enough, if I had to live there, I’m fairly certain I would go quite insane.

I stayed with a friend that had an earth home, and it was in a side of a hill, and had a south wall of windows. That’s the only way living underground would work for me.