Knit sock with targeted compression zones, and method for lifting and stretching the plantar fascia

A knit sock integrally formed of a body yarn in circumferential courses and axial wales, said sock comprising:

• a foot portion having a heel and a toe;
• an ankle portion joined to said foot portion and defining an open leg end of said sock;
• a first targeted compression zone formed with said foot portion between the heel and the toe, and comprising spaced-apart axial compression ridges extending axially outward from the heel at a first end of said first compression zone to a second end of said first compression zone, and wherein adjacent axial compression ridges have different coursewise termination points at the second end of said first compression zone;
• a second targeted compression zone formed with said ankle portion between the heel and the open leg end of said sock, and comprising spaced-apart axial compression ridges extending axially outward from the heel at a first end of said second compression zone to a second end of said second compression zone, and wherein adjacent axial compression ridges have different coursewise termination points at the second end of said second compression zone;
• and
• whereby a compression force applied by said sock within said first and second targeted compression zones is greater than the compression force in directly adjacent areas of said sock.