CHANGING OF THE SEASONS
There’s lots of research on how circadian rhythms can influence our wellbeing, now a study says the seasons can determine our brain power too. A team of international researchers followed more than 3000 people in North America and Europe, most of whom were over 70, and gave them annual tests looking at memory and processing speed, which were also tested randomly throughout the year. They found that cognitive performance was higher in summer and autumn, peaking at the autumn equinox, before falling in winter and spring. Researchers say it may be down to how we alter our lifestyle habits with the seasons, or our brains may even experience something similar to a mild hibernation over winter.