Are these "logical" assertions or have there been studies you can link to?
They are guesstimates/first impressions of what community consensus likely is, as well as my personal version of common sense. A random comment without modifiers on the internet generally implies something like that, not that there is mountains of rock hard evidence behind every vague assertion. I'd not put this in a top level post in main, which is closely related to why I'm likely never write any top level posts in main.
Thus spake Eliezer:
It seems that many here might have outlandish ideas for ways of improving our lives. For instance, a recent post advocated installing really bright lights as a way to boost alertness and productivity. We should not adopt such hacks into our dogma until we're pretty sure they work; however, one way of knowing whether a crazy idea works is to try implementing it, and you may have more ideas than you're planning to implement.
So: please post all such lifehack ideas! Even if you haven't tried them, even if they seem unlikely to work. Post them separately, unless some other way would be more appropriate. If you've tried some idea and it hasn't worked, it would be useful to post that too.