[MENTION=396692]Buffalo Buff[/MENTION]

Yes it doesn't give an upper body or core workout. But a set of pushups, crunches and planks can be done in a few minutes. I do mine while the kettle boils or right before my son wakes up.

And that is usually sufficient for normal people.

Cycle commuting providse a chance for many with young families and busy lives who might not otherwise have or take an opportunity to exercise. Plus it sets a great example for kids for life long physical fitness.

So to many of us cycle commuting is more than enough.