Oftentimes, people think about their sleep rhythm as an arbitrary choice, but in fact, it does affect your health. We know that if your human circadian clock runs slow, morning light can help fix that and reset it, whereas evening light moves us in the other direction and makes it harder to get up in the morning.
Some people want to switch to one year-round time. What do you advocate?
In most cases, the standard time (or winter time) is the more natural time that fits better with our body cycle. If we follow a time where we get up before sunrise or have a later sunset, then it’s linked to more social jet lag, where people are less attentive at work, don’t learn as well at school, and have more accidents.
Instead of picking what sounds good or chasing the name — such as “daylight saving time” — we need to think about the right time for us and our circadian clock. Some places, such as Maine in the United States, would actually fit better with the Atlantic time zone or the Maritime provinces in Canada, whereas some parts of Alberta are geographically west of Los Angeles based on longitude and would fit better with the Pacific time zone. Sticking with a year-round daylight saving time in some cities in Alberta would mean people wouldn’t see the sun until 10:30 AM in the winter, which is really late and could affect activities such as skiing and hockey.
The Canadian Society for Chronobiology advocates for year-round standard time to align our social clocks with our biological clocks. Sleep and circadian rhythm experts in the US and globally have issued similar position statements.
What tips do you suggest to help people adjust their circadian clocks in November?
For people who know their bodies and that it will affect them more, give yourself extra time. If your schedule permits, plan ahead and change your clocks sooner, especially if you’re able to do so over the weekend. Don’t rush around while tired — rushing when you’re not ready leads to those increased accidents on the road or on the job. Know that the sun will still be mismatched for a bit and your body clock will take time to adjust, so you might feel out of sorts for a few days.
Antle reported no relevant financial relationships.
A version of this article first appeared on Medscape.com.