Caught a talk show on the CBS with some expert in time and the affects that cause problems in humans, and he went into detail how/why the changing of the clocks actually caused negative things to happen. Some of his findings made sense, some I thought were debatable. Often the type of work you do amplifies the affects.
Overall, this pundit of time was wholly against the time changes, saying that accidents, and mood swings, with the loss of sleep was typical for some.
Q