Sources
1 //www.cbsnews.com/news/two-hours-of-sitting-cancels-out-20-minutes-of-exercise-study-finds/
2 https://www.washingtonpost.com/apps/g/page/national/the-health-hazards-of-sitting/750/
3 https://vitalrecord.tamhsc.edu/boosting-productivity-at-work-may-simple-stand/
4 //www.health.harvard.edu/blog/much-sitting-linked-heart-disease-diabetes-premature-death-201501227618