Furman, 56, is nicknamed “Mr. Versatility” because of his ability to set new records in a wide range of GWR categories. He’s been breaking and setting records since 1979, when he did 27,000 jumping jacks in a row. After setting the record, he noticed that the entry listed directly underneath his new title in the gymnastics section of the Guinness Book was for somersaulting.
“‘Wow,’ I thought, ‘it would be cool to have two records right next to each other,’” Furman says on his website. In 1980, he gained the title by continuously somersaulting for 10 miles through a park in New York City. Six years later, he broke his own record when he somersaulted for 12 miles and 390 yards from Lexington to Charlestown, Mass., along the length of Paul Revere’s historic ride.