It鈥檚 time to fall back, which means another hour of sleep. It鈥檒l get darker earlier, but we鈥檒l gain an hour of light in the morning. And while the early evening sunset may be dreaded, most sleep experts and organizations are in favor of keeping standard time permanent year-round. Here鈥檚 why.
It aligns with our circadian biology
Light is a critical synchronizer to our circadian rhythm. That鈥檚 because our bodies are automatically stimulated and cued with the timing of the sun. This is optimal for daytime functioning and nighttime sleep, according to the American Academy of Sleep Medicine (AASM).
Research shows that during Daylight Saving Time (DST), more people are sleepy in the morning and have trouble getting going. This is especially problematic for children.
"It鈥檚 harder for teenagers because their circadian rhythm undergoes a shift during puberty where they go to bed later and wake up later," says Kelly Glazer Baron, PhD, a clinical psychologist in at 麻豆学生精品版. "The problem with that is school start times are early, which makes it harder for them to wake up." But Baron points out that morning light can help their circadian rhythm.
It's good for your sleep health
Permanent DST would allow more darkness in the morning and more light at night, which misaligns our circadian rhythm to the environment鈥攎eaning we are going to bed later and getting up earlier than sunrise/sunset due to our everyday obligations. According to the AASM, evidence shows that the . This could potentially cause sleep disruption and lead to chronic sleep loss.
Baron adds that if DST was permanent, it wouldn鈥檛 get light until 9:00 am in Utah some weeks during the year. And in the height of summer, it may push bedtimes later (for adults and children) because of late-night sunsets, especially in Western time zones.
It poses a public health and safety risk
According to studies, at the start of DST. The transition can also be a health hazard for school-age children who catch a bus and walk or ride to school in the dark. "Permanent DST can have detrimental effects and serious consequences to missing out on that morning light," Baron says.
Transitioning between standard time and DST can of:
- Cardiovascular disease and events
- Stroke
- Mood disorders
- Sleep disruption and loss
While most research shows the health impacts directly following the transition, there is little evidence of chronic or long-term effects of DST.
It can cause seasonal depression
As the days get darker and shorter, people may experience less energy and become less productive. Seasonal affective disorder (SAD) is a type of depression that is often triggered during the winter months. While symptoms range, people may have trouble sleeping, lose interest in activities they once enjoyed, feel hopeless, or have thoughts about self-harm. It鈥檚 important to seek help to help manage and treat symptoms of SAD.
It鈥檚 an easier transition for most
Parents can rejoice this time of year鈥攏ot only for an extra hour of sleep, but because the transition to standard time shouldn鈥檛 negatively interrupt sleep schedules. "What was a 9:00 pm bedtime will now feel like a 10:00 pm bedtime," Baron says. "More than anything, people get more sleep for a couple days." And research shows a benefit to the time change with less heart attacks and car accidents.
