While what you say is true, taking public transport makes people move around more: going to&#x2F;from the bus-stop, changing at connections, standing up in the metro instead of sitting etc.<p>Here is a study on this subject: <a href="http:&#x2F;&#x2F;www.bmj.com&#x2F;content&#x2F;349&#x2F;bmj.g4887" rel="nofollow">http:&#x2F;&#x2F;www.bmj.com&#x2F;content&#x2F;349&#x2F;bmj.g4887</a>
Its conclusion: &quot;Men and women who commuted to work by active and public modes of transport had significantly lower BMI and percentage body fat than their counterparts who used private transport.&quot;