fish

Researchers have determined that the neural circuitry, and genes for walking found in animals, were developed 420 million years before the first little skates (Leucoraja erinacea) and tetrapods. Which is way before the evolution of limbs used for the means of walking movements...

Considering how cultures like Japanese consume a lot of fish, I think this makes sense. Feeding children fish at 10 months-old sounds like a challenge, but if it could improve sleep and IQ; I think it would be worth it. Personally I love fish, if this is true, maybe I should eat more of it to...