In the 1950s, people laughed an avg. of 18 min/day. Currently, it’s about 4-6 min/day. Posted on December 15, 2013December 15, 2013 by admin VN:F [1.9.22_1171]please wait...Rating: 0.0/5 (0 votes cast)VN:F [1.9.22_1171]Rating: 0 (from 0 votes)