Walking exercise program and resistance bands

  • I am thinking about starting this walking program:
    Sun.: Long Day - 60 min.
    Mon.: Day Off - 0 min.
    Tue.: Short Day - 30 min.
    Wed.: Short Day - 30 min.
    Thu.: Long Day - 60 min.
    Fri.: Short Day - 30 min.
    Sat.: Long Easy Day 30 min. at target HR, 30-90 easy.

    It's from about dot com's walking website. I would like to do this and also add resistance bands. How often should I do the resistance bands?

    Menzy