Former Democratic presidential hopeful and entrepreneur Andrew Yang is saying something some of us have been saying for years: “3-day weekends are better than 2-day weekends.”  In a tweet posted Monday, Yang wrote that the U.S. should “seriously consider 4-day work weeks.” Yang added “Studies show that we would be just as productive.  It would create jobs at the margins and increase mental health.” He was quoting a recent Washington Post report on studies on 4-day work weeks.