This is quite interesting. It turns out that the fish is useful for many things. In this case, I'm not sure if the fish or the higher IQ is the reason for a better sleep.I will certainly add fish at least twice a week .
Consuming fish improves intelligence and sleep, scientists from Pennsylvania University found. Their study was published on the Eurekalert portal.
Previous studies have shown the effect of omega-3 fatty acids on the mental activity. But the relationship between the level of intelligence (IQ) and the improvement of sleep has not been studied enough, the authors say.
source https://www.iwoman.bg