That's why I ask... I too am in search of the evidence. It's always take my word shit, but all these grow journals around and no one has done this experiment!!! Sometimes you just need to do it yourself to see. We do things as growers and people in everyday life just because that's how we learned doesn't make it right or wrong. Something told me that would be your answer lol, and it was a mighty good 1! It was honest. I do things like that as ritual all the time, not that it was the "best" way just the way I learned. I see all these growers doing this on here, but never seen proof. I as always figured it was just the way they learned, ancient secret type shit hahaha. I think there may be something to it, kinds makes sense from what I know. I read an article on this Dutch group of scientists did a study on this. They said yes, with some strains it seems to produce more of an effect than others. White Widow being 1 they said this technique works well with. I have no idea if this is true, people fake the dumbest things lol. Keep doing whatever it is you're doing bud, your plants look amazing!!! Stay lifted.