Some parents are overjoyed at the prospect of permanent daylight-saving time, saying changing the clock messes up kids' sleep

Avoiding the switch between standard time and daylight-saving time may be a good idea, said Andrea Spaeth, an assistant professor and laboratory director at the Rutgers Sleep Lab.

But Spaeth said daylight-saving time isn't optimal for our circadian rhythms: Exposure to daylight in the morning triggers a signal to the brain that it's time to be alert, while avoiding exposure to light in the evening signals it's time for sleep. Standard time aligns with this system better than daylight-saving time, and that's especially true for children, Spaeth said.

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