What kind of walking? Fast, like race-walking? easy walks? being dragged by the dog? Rest allows the micro-tears to heal, which is important. However, you still need to keep the ankles moving! If you belong to a gym with a pool, use it. It gives you the resistance of exercise without the damage caused by gravity. Then you need to stretch properly, using MET.
Go to my website,
http://www.kaywarren.org and read up on plantar fasciitis and how the mechanics of your foot work with walking. One of the biggest factors in plantar fasciitis is previous ankle injuries. If you have them, my guide to healing plantar fasciitis without surgery will help enormously. e-mail me through my website and ask for it. Also, let me know about your injuries. If I think it will help, I'll gladly send it out. If what you tell me indicates that injuries may not be your base cause, I'll tell you what I think, and try to point you in the right direction. You really have nothing to lose but pain and agony.
Kaelyn