Making CO2 is an expensive process and our body does it on an at-need basis. Flooding the air with oxygen will do nothing. My suggestion is something that help

Making CO2 is an expensive process and our body does it on an at-need basis. Flooding the air with oxygen will do nothing. My suggestion is something that helped personally, and is something like a psychological trick so your mileage may vary. I don't mention my weight loss/exercise routine/diet to anyone. The effect I think this has is that I don't prematurely rob myself of the dopamine hit for working out by simply talking about it. Anyway I can draw a line in my fitness history where I started doing this and I've been much more successful since.