According to the European Organisation of the Sawmill Industry (EOS), people experience positive physiological and psychological reactions when they enter buildings where wood has been used indoors for structural and furniture purposes. Wood absorbs and releases moisture in a process that balances the variations of indoor humidity, explains the EOS. Balanced humidity improves the quality of the air by reducing the need for ventilation while at the same time, improving energy efficiency http://www.woodsa.co.za/wp-content/uploads/2020/05/WoodApril2020.pdf