Most people spend 80-90 percent of their time indoors; so healthy environments are essential to well-being Most people spend 80-90 percent of their time indoors; so healthy environments are essential to well-being Most people spend 80-90 percent of their time indoors; so healthy environments are essential to well-being Most people spend 80-90 percent of their time indoors; so healthy environments are essential to well-being Most people spend 80-90 percent of their time indoors; so healthy environments are essential to well-being Most people spend 80-90 percent of their time indoors; so healthy environments are essential to well-being