I went to the North Camp and West Camp (hence my name) in the summer before my senior year of XC. I had been doing maybe 40 miles a week before these. On my first week at Paavo, I did 55 miles of intense running. Then I had a week between N and W camps where I did 60 miles. At West camp, I did 70 miles the first week, and 78 miles the second week. So, in a matter of 3 weeks, I wen from 40 to 78 miles.
The thing was, getting back from West camp, I was FIT. I was running faster than I ever had by far. I was determined not to lose the fitness I had worked so hard for. I ran in the morning, went to our team practice mid-morning, and ran in the afternoon. I was pulling three-a-days often. But, after a month or so of this, I felt different. I stopped improving. I was running decently, but I was mentally and physically depleted. I ended up running a PR by 30 sec in the first couple weeks, but in each sequential week, I found myself falling shorter of where I needed to be.
The more I thought about this, the more I was sure that my problem was that I wasn't working hard enough. I got up before dawn and put in miles. I put in miles after dark. I ran mornings before meets, and did tempo runs after meets. But the more I ran, the worse I raced. When my CD was at 120 days (not much compared to some, but still...) I realized that I needed a day off. I was 9 miles into a medium paced long run and fell WAY off pace. At the end of my senior XC season, when all of my HS dreams and goals were supposed to be coming to fruition, I was a burnt-out, miserabale mess. I was crushed.
Now, I am starting spring track. I have learned that it is OK to take a day off. It does not mean that you are a bad person, or that you are a wimp or slacker, or not dedicated, or anything else. I find, for myself at least, that it takes courage to take a day off. I am not afraid to take the pain, or gut out an all out PPM run, but there is a time and place for these types of runs.
I have found that it is OK to run at an EASY pace. At Paavo, you are never running at slower than CT pace, or tempo pace.
Finally, I have learned that I need to return to the basic essense of running. I now do a Sunday long run, tempo work, and make sure to take EASY days. While my current plan is not perfect, I am learning as I go.
I have nothing but respect for Mars Sellers. He is an excellent coach who knows his stuff. He has inspired me to run until I know I cannot continue, and then run some more. I would do the camps again in a hearbeat. I wouldn't trade the bonds and friendships I made for anything.
However, I believe that Paavo is not perfect. It does not work for everyone. If you have the chance, go to a camp or clinic. It will teach you a lot about yourself as a person, as well as a runner.