Playtime and nature time are important not only for learning but also for health and development.

Researchers studied 34 students at the University of Virginia, taking them to the base of a steep hill and fitting them with a weighted backpack. They were then asked to estimate the steepness of the hill. Some participants stood next to friends during the exercise, while others were alone. The students who stood with friends gave lower estimates of the steepness of the hill. And the longer the friends had known each other, the less steep the hill appeared.

Playtime and nature time are important not only for learning but also for health and development.

The best way to improve children's performance in the classroom may be to take them out of it.