OK, so now I know who Joe Rogan is, though I don’t feel like it’s enriched me in any way. You could have just said Matthew Walker — anyone studying sleep knows his work.
I didn’t listen to the podcast, but I googled Matthew Walker and melatonin to get you a sample of his view on it. And it’s exactly what I just said since what I just said is neither new nor controversial. Here, open this is and use the find function to scroll down to his explanation of what oral melatonin does. I suspect you Kay have misunderstood whatever he’d said in the podcast.