I'm 2 thirds through week 4, which is one of the 2 rest weeks in phase 1. It has exercising on 3 days, instead of 5, where you do one metabolic exercise, and the remaining 2 is up to you to decide on which of the other exercises you want to do.
I did Shoulder Stabilization, and haven't decided on the 3rd one yet, will probably be total body integration :)
Enjoying the rest week, but looking forward to starting the 2nd half of phase 1.
Cheers for now, and have a kickass weekend!