

We need sunlight on our skin to generate vitamin D. If you don’t get enough vitamin D you will feel like shit. Not to mention the insiduous psychological effects.
In short, more and bigger windows are the way forward. Go outside in the wilderness, it feels good.
I can understand this sort of thing among the elderly but I’ve met ablebodied engineers who don’t understand how to computer. The awesome thing is that they don’t take advice, they just Dunning Kruger their way through.