I just read an interesting article that mentions that young people are not getting as much walking in as we used due to technology. They are spending more time on their electronic items rather than enjoying the fresh air.
One of the reasons, I love running without a watch (and music) is the feeling of being unplugged. I am on a computer all day long for work and I night, since we do not have a TV, I use the computer before bed.
One of the biggest reasons for not being able go walking is lack of time. That is BS. Anyone can squeeze in 10 minutes once or twice a day. I take two "walk breaks" at work. About 10 minutes to clear my head and get some fresh air. If you are in an office building, walk around the floor. There is always an excuse, but there is also is always a way.