India, Nov. 2 -- Most Americans will enjoy an extra hour of sleep this weekend as the nation transitions from daylight saving time to standard time. Shorter days can mean less daylight for outdoor activity, exercise, or time spent outside after work and school - a shift that can affect both mood and sleep.

The twice-a-year clock adjustment continues to face growing criticism. Health experts and organizations like the American Medical Association and the American Academy of Sleep Medicine have long advocated for permanent standard time, arguing that switching between time systems disrupts the body's natural rhythm.

A Stanford University study supports that stance, finding that maintaining one consistent time year-round is better for huma...