The clock going back for winter is far less disruptive than the spring shift, which has been linked to spikes in heart ...

If you’ve ever heard someone say a meeting is at 1630 and then felt your brain do a small cartwheel, you have met the 24-hour clock. In the United States, we mostly live by the 12-hour clock, with a.m ...

INDIANAPOLIS -- It's known nationwide for rolling back prices. Now Wal-Mart is rolling back something else: its hours. At select locations in markets across the United States, the nation's largest ...

Non-24-hour sleep-wake disorder (N24SWD) occurs when your sleep-wake cycle gradually shifts out of sync with the 24-hour day. It affects about half of blind people, but it can also affect those with ...

This Sunday, we will all dutifully set our clocks back one hour for daylight saving time. But why is our day divided into 24 hours, each hour divided into 60 ...

Every year, as clocks go back in October, millions of people celebrate an “extra hour” of sleep. But how much does this small shift really affect our bodies, our sleep and our mood? According to ...