Promoting walking and cycling as an alternative to using cars: systematic review

Sorry to write so many responses here. But an important aspect of
this discussion has not yet been touched.

I participate in stenuous physical exercise, with training sessions
at least four evenings every week. I also bicycle quite a bit for physical
fitness. I live too far from work for bicycle commuting, however. So I
keep my bicycle at work and use it primarily for fitness, and for
transportation in the region of the university. The vast majority of my
kilometrage is by car. Also, needing some substantial equipment for
training sessions I use the car to take my equipment to and from the
training hall, even though it is within very short walking distance from
my office. One of my trainers lives far from the training hall and drives
at least an hour and a half each way, twice a week, to come and teach us.
I also use the car quite often to get to training sessions in far away
cities. Although I am not a competitive cyclist or serious bicycle
tourist, I often see bicycles carried on racks on cars on their way to or
from meets or touring take-off points. Maybe some inverse correlation
obtains between physical exercise and car use. But factors of the sort
which I have mentioned would seem to make it very hard to establish such a
correlation.

Competing interests:
None declared