Glen Nielsen measured children’s movement using accelerometers – devices measuring the number and strength of the children’s accelerations – for his PhD project. ScienceNordic reports that the children exhibited the most intense physical activity during free play rather than organized sport. I am a supporter of organized sport for many different reasons, but it is important to let children’s areas allow them to create their own exercise, such as tree-climbing, football, and other types of games.

H/t: Merete Lund Fasting writing in Aftenposten.