Daylight saving time (DST) is the practice of advancing clocks during summer months so that evening daylight lasts longer, while sacrificing normal sunrise times. Typically, regions that use daylight saving time adjust clocks forward one hour close to the start of spring and adjust them backward in the autumn to standard time.
In effect, DST causes a lost hour of sleep in the spring and an extra hour of sleep in the fall.
DST is generally not observed near the equator, where sunrise times do not vary enough to justify it. Some countries observe it only in some regions. Only a minority of the world’s population uses DST, Asia and Africa generally do not observe it.
DST clock shifts sometimes complicate timekeeping and can disrupt travel, billing, record keeping, medical devices, heavy equipment, and sleep patterns Computer software often adjusts clocks automatically, but policy changes by various jurisdictions of DST dates and timings may be confusing.
Most of the United States begins Daylight Saving Time at 2:00 a.m. on the second Sunday in March and reverts to standard time on the first Sunday in November.
To cope with this change people must follow :-
• Eat dinner well before bedtime
• Don’t take long naps during the day
• Have a relaxing bedtime routine
• Take advantage of the morning light
• Fit in a morning workout