Daylight Saving Time

A Washington University in St. Louis expert on circadian rhythms says the country should be on standard time permanently. The science behind the choice is clear: standard time is better in terms of sleep, cardiac function, weight, cancer risk and alcohol and tobacco consumption.

The movement to abolish clock-time changes each spring and fall is growing — and so is the scientific evidence. Experts say perennial standard time, or “wintertime,” is the best and safest option for public health.

The century-old government convention of daylight saving time takes effect this weekend, but it can be hard for our bodies to handle. Washington University circadian rhythm expert Erik Herzog offers some tips to help us adjust.

With the recent time change — daylight savings time ended at 2 a.m. Sunday, Nov. 6 — it will get dark earlier in the evening. The Washington University Police Department offers some reminders as part of the “Don’t be in the Dark” campaign.