Facebook post by University of Helsinki

Foundations for life-long learning are laid during early childhood. While chewing a toy or dropping things on the floor might feel annoying for parents, these actions are important for children's brains. All future learning is actually based on the synaptic connections formed during these experiments.
Children’s and grandparents’ brains learn new things in different ways | University of Helsinki helsinki.fi

Studying is good for brains of all ages, says Professor Minna Huotilainen.