Almost one in four depressions can be caused by a malfunction of the biological clock.

Almost one in four depressions can be caused by a malfunction of the biological clock.

This is the so-called circadian subtype of depression - with a disturbed circadian rhythm. Symptoms include late falling asleep and waking, difficulty waking up even after a long sleep, sleepiness during depressive episodes, and marked seasonal changes in mood, energy, and appetite. It's not for nothing that people say: in any uncertain situation, go to sleep. However, not only the duration of sleep is important, but also its regularity. Scientists recommend measures to help set the rhythm: getting up around sunrise, daylight, regular meals and physical activity. In the evening, you should avoid light, heavy meals and intense physical activity. These tips are all good. But what time do we northerners get up "around sunrise" on the polar night? Or in the summer? Moscow time or Greenwich time?