YES. this was actually the prime motivation for me. I was doing circadian biology research, and learned about cold exposure effects and CO2 levels inside. I wanted to see how different I felt. I was not expecting such a significant difference. I house sat for a week in January and was able to clearly feel the lethargic effects. This whole thing is going to significantly affect how i live moving forward. Feeling good and clear every day is invaluable to me.