According to the best-selling book, Spark, by Dr. John Ratey of Harvard Medical School and a member of the Healthy Facilities Institute (HFI) Advisory Board, brain growth happens as a result of regular exercise, and is especially pronounced when that exercise includes activities requiring acquisition of skills.
Thus, Ratey explains, learning to play the piano can make you smarter for performing algebra, because developing the skills needed to play the piano creates brain connections that can be used to perform other tasks.
Bottom-line: Skilled cleaning professionals are smarter than unskilled ones.
Per Dr. Ratey, for maximum brain development you need both aerobic and skill-based exercise, so cleaning and learning better, faster and healthier ways of doing so, should aid brain growth.
What are you waiting for? Get smart by getting onboard with your own specific professional cleaning skills-training program. Your body will be healthier as will your bottom line, and customers too.