“… Beginning Saturday at 8 a.m., he started his pull-up marathon. Within six hours, the Langley High School junior completed 3,515 pull-ups — a new world record. By 12 hours, he had finished 5,742 pull-ups — another world record. Then he set his sights on a final record — the most pull-ups performed in 24 hours: 6,800 completed by Czech Republic athlete Jan Kares in 2015.” …
His Fitbit was spinning.