Please register to participate in our discussions with 2 million other members - it's free and quick! Some forums can only be seen by registered members. After you create your account, you'll be able to customize options and access all our 15,000 new posts/day with fewer ads.
That's been well-known for a while in Finland - that's why we have 15 minute breaks after every lesson for the children to go outside and run around the playground, as its known that it improves concentration and learning as well as obviously helping with health. Play is vital here (and for children under 8 the current recommendations are three hours a day of exercise).