Wherever people are involved in intellectual work or learning, it is important to offer a good environment that keeps the brain relaxed, the mind alert and the body healthy.
Research shows that natural light does just that. In a study made in 1999 saw students in classrooms that had the most natural light was 20 percent faster on math tests and 26 percent faster on solving tests. Studies on the workplace shows that productivity increases by about 18 percent , absenteeism decreases by approximately 5-25 percent. Adding in addition to the energy savings of up to 25 percent of the annual cost , it is not hard to figure out that it takes so long before you can get a return on the investment when adding more sunlight indoors.