Interesting article on Radio 4 this morning on the effects of lack of natural light on anxiety /depression. The speaker was advocating that being outside for only a short time in the winter, even on a very grey day was hugely more beneficial than being inside a brightly lit room and suggested this can impact on mood / circadian rhythms. Inside a very bright room will give out around 200 lumens of light. Outside on a dull winters day gives out 2,000 lumens. (A sunny day can be up to 200,000). Makes it worth trying to get out each day even if the sun 'aint shining.
