blog posts Want to feel calmer? How 20 minutes outside will help Oct 13, 2025 3:45 pm by BBCIllinois in the News Share on Facebook Tweet Email Images BBC (Oct. 9) 'A three-day weekend in nature has a huge impact on our virus fighting apparatus and even a month later it can be 24% above baseline,' says U. of I. environmental sciences professor Ming Kuo. Share on Facebook Tweet Email