Downstream

overestimate their time, while
women tend to underestimate
theirs.
While some are put off by
weeds and mud – and the
sensation of weeds underfoot
can cause panic – it’s the
possibility of drowning that is
the real fear for the
organisers. ‘What we expect
is that someone will drown,’
says Tom, ‘what is likely is
hypothermia. What may
happen is a heart attack.’