The most concrete blocks smashed by hand in one minute is 21 by Mikael Birgersson of Sweden on February 3, 2001 on the set of Gunnness Rekord TV, Stockholm, Sweden. Each block, measuring 60 x 20 x 7 cm (23.62 x 7.87 x 2.7 in) were stacked in piles of one, two, three, four, five and finally six high.