“The more light that you get during the daytime, the less impact the light in the evening has,” Zeitzer says. The pre-pandemic world exposed people to a lot more light than they realised. There’s the Sun during a commute, the piercing fluorescent bulbs of an office, a walk to lunch. Now, so many of us roll out of bed and sit under the same lighting conditions until we go to sleep. Our bodies can’t tell the difference between day and night.

RTO propaganda! /s