I walked today and my plan is to keep at it since, according to a recent study, an irregular exercise pattern may add pounds. While the study focused on runners who move a lot more miles per week than I do, the advice can't hurt. Hopefully by walking more regularly, I'll build up to huge numbers like 30 miles per week.
When commenting on the study, Paul Williams of Berkeley Lab’s Life Sciences Division said:
We are getting fat because we don’t exercise sufficiently and consistently. The real solution to the obesity epidemic is getting people to exercise before they think they need it, and to stick with it. The ounce of prevention is indeed worth a pound of cure.