Humans breathe 15,000 L of air each day and studies show that indoor air quality can directly impact health and employee productivity. The idea of designing around the occupant is quickly growing and building certifications such as WELL have emerged. Technology allows for the continuous optimization of ventilation rates in commercial buildings and 24/7 access to data. Real examples of air quality data will be shared to demonstrate the drastic changes that occur hour to hour, day to day, and week to week, influenced by both occupant activity and the increasing number of unplanned environmental factors. How can building owners create a healthier facility? Where will this merger of data and IEQ lead? With decarbonization spreading across major cities, what influence does it have on the healthy building movement?