| > You do it only twice per year Your body has six months to get used to an hour difference, so it sets in nicely, for maximum impact 6 months later. > But how often do you stay late up because of an event or whatever Personally, not often at all, but I get the point. The time you're supposed to wake up doesn't change though, and that's what makes the difference. > And how often do you travel to another time zone, sometimes even >6 hours I can count how many times I've done that in my life on one hand, and I'm sure I'm not alone in Europe. > I think the latter effects outweigh the health impact of clock alignment significantly. Have to disagree. Like I said it's to do with having a set hour you're _supposed_ to wake up. Meal times are another big factor. |