Plantar Fasciitis is a painful inflammation if the connective tissue in the sole of your foot. The fascia in your foot essentially forms a sheet of tissue, running from the heel forward to the base of the toes. This fascia can undergo damage by way of micro-tears from unsupportive footwear allowing your arch to drop, trauma to the fascia itself with injury, and poor mechanics of the foot during everyday activities and exercise. These small tears do heal, but if the original strains upon the fascia remain they can heal as small deposits of scar tissue, and over time cause shortening and tightening within the whole plantar surface.