LPT If you feel lethargic all the time at your apartment, make sure you have proper ventilation so fresh oxygen can cycle through.

I live in a run down, old apartment with no ventilation. When I first moved in here I thought it was hard to breathe because my apartment had some sort of mold. It turns out, it was the ventilation. Like a turtle in a box with no holes, I was depriving myself of oxygen which caused me to feel lethargic nearly 24/7. I open the windows now and feel much better and more alert because the proper air circulation is coming through. It took me a while to come to this conclusion so I thought I'd share my results here.