We set our clocks to “fall back” recently, meaning an extra hour gained in theory. Reality is, daylight saving time in spring and fall has a much larger effect on our bodies and general health.
What seems like a trivial one hour shift can affect sleep for up to a week, influencing moods, appetites, productivity, motor skills and even increasing the risk of heart attack.
Few people actually get the extra hour of sleep in the fall. In the week following the change, most people have trouble falling asleep, wake up earlier and are more likely to wake at night.
– Taylor Thompson, The Atlanta 100