Do 1 pullup the first minute, 2 pullups the second minute, 3 pullups the third minute.... continuing as long as possible.
Above: our chinup challenge at the Park. Do 1 pullup on the first bar, 1 on the 2nd, etc. On the last bar of each length, do 1 pullup, turn around, and do another to continue. Go as long as possible. Record: 2 lengths plus 2 rungs - Ray Gowlett.