lynda
Cathlete
Has anyone had any experience with substituting any of Cathe's cardios for the run/walk intervals in this rotation. I work out in the morning when my kids are sleeping, and although I have a treadmill, it's old and not great, and I just don't like to use it. Also, any recommendations on substitutions for the biking? I don't want to compromise the success of the rotation, but I'm a tape workout person, and I don't think the running/biking is going to work for me. Thanks! Lynda