I would finish off the workout completely. The way I view it is that if you have to take off, go on vacation, or eat poorly/cheat, get back to it as if it never happened and keep on with your goals. In my case, I took off a week in the middle of FLII because my knee was aching (pushing hard with 6 hours of hockey a week, some tennis, and FLII workouts), and wanted to prevent injury. I finished off FLII and went straight into HTI, where I am now finishing the second week, and am taking off the week after Memorial Day for vacation. This fills in the 2 weeks of rest that is suggested in the Eternal Beginner program, though admittedly not consecutive. My body has felt ok, however, so I've pressed on. If I deem that I need a longer break, I will do so; I've had long-lasting injuries in the past and I'm not willing to have it happen again.
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