- It is especially good with lighter mornings from a health perspective. It makes us more alert says Arne Lowden, associate professor at the Stress research institute and an expert on how light affects us.

Research has shown that there is a slight increase of risk of accidents and heart failure due to disrupted circadian rhythm in connection with shifting from or to daylight saving hours. However is the risk higher in the spring. At this time of year, darkness and lack of light is a much larger source of discomfort. So make sure that you get as much daylight as possible.

A study made by Arne Lowden and associates shows that more than 40% of the population feels dysphoria and tiredness due to lack of sunlight in the winter. But darkness and cold isn't the only source of discomfort.

- In the summer we tend to have vacation and has plenty of time to recover. In the autumn, when work and everyday life demands puts pressure on us, stress might wear us down and make us fatigued and depressed says Arne Lowden

The best way to not fall into depression during winter is to spend as much time as possible out in the daylight to fill upp the reserves of vitamin D. As a complement to this, use daylight lamps especially in the mornings. And if possible, try to get a week away south to fill up with sun.

For the most part of the winter, most of us will spend very much time at work, but there is ways to compensate for all time spent indoors. 

- Make light rooms and change the lighting at work. Every office should have at least one place where you can fill up with light, maybe a café with daylight lamps says Arne Lowden.