Daylight Savings and Your Health

We went through the bad end of the time change this weekend. The shortest nights sleep of the year was Saturday night and I sure felt it after my workout this morning dragging my butt through the afternoon. But, what about your health and the Daylight savings? Does it affect you or not?

It seems that when the clock is moved forward or back one hour, the body’s internal clock — its circadian rhythm, which uses daylight to stay in tune with its environment — does not adjust. In a study of 55,000 people, for example, scientists found that on days off from work, subjects tended to sleep on standard time, not daylight time: their waking hour followed the seasonal progression of dawn.

In other studies, scientists tracked large groups of people for eight weeks at a time as they made the transitions to daylight time in spring and to standard time in autumn. They found that in spring, people’s peak activity levels were more in tune with their body clock than with the actual clock. Studies suggest that this disconnect between body time and clock time can result in restlessness, sleep disruption and shorter sleep duration. Other studies have suggested links between time change and increases in heart attacks, suicides and accidents, though scientists say more study is needed.

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