Exactly. And it seems to discount that the most taxing flights are awful in timing. Try flying eastward over the Atlantic for example: most flights are red eyes and that means you need to be awake 1-3am destination time. So you just did all that gentle sleep shifting only to disrupt it with 3 hours of your time transiting to and through airports, more if you're unlucky.

What worked best for me when I was crossing weekly: take 1 day after going east. Everything else just tough it out and don't be a whiny bitch. And most importantly: don't drink the booze.