It's that time of year again to turn our clocks back one hour. At 2 a.m. Sunday morning, Daylight Saving Time will come to an end, ushering in earlier nightfalls and brighter mornings. Generally, the adjustment in time makes for the pleasant effect of the morning alarm's six o'clock shrill fest seeming to be at 7 o'clock, at least for the first few days.

The practice of Daylight Saving, which is observed in all states except Arizona and Hawaii, has its fair share of detractors, many of whom cite it as a cause for sleep disruption patterns as people adapt to the hour difference.

Proponents of the time change point to it as making better use of daylight in the warmer months by adding an extra hour of sunlight for leisure activities.

Despite the rationale from either camp, the time tweaking will once again launch this weekend.

In addition to that agreeable sensation of sneaking in an extra hour of sleep, the time shift also serves as a convenient reminder to change out the batteries in smoke and carbon monoxide detectors.