Comment by em-bee

depends, that's my point. i have done a lot of biking when i was younger. for me it does have the same effect, but only if there is no, or not much traffic. biking through a busy street is like walking through a busy market. to relax you want a quiet empty path. for 1 hour walking that path is 4km long. to get the same with one hour biking you need 20km of quiet empty road.