text: The biological clock being stressed is not the circadian rhythm it is the whine-adian rhythm.  We want all the daylight during the summer evenings but fail to realize that it would be dark until mid-morning. Also all the people who complain would willingly skip time zones to enjoy a vacation or stay up late to watch a movie or go to a party - and then just miss the sleep lost. When the time change happens during work it apparently causes accidents, distractions and mayhem. People with few problems chose to make little problems big problems. Maybe instead of complaining or walowing in self-pity do something charitable (which has been proven to be good for mental health). And if it is really a big deal ask your employer to allow you to start work one hour early so you can go home one hour early, same thing.