Do some people digest more efficiently?

[DSeid]

If you are serious here’s a sense of the range of normal:

The post mortem average length of the whole intestine was 795.5±129 cm and was significantly longer in men and in young subjects. It was correlated with the subject’s weight but not height. Multivariate analysis demonstrated that the factor showing the strongest correlation with intestinal length was body weight.

In mice and rats at least diet impacts large intestinal length.