If you can't make it to the meeting, please let me know, and I will fill you in on the details. But, as with many other areas of life, your experience will be exponentially more enjoyable if you are in good shape. We will have opportunities to hike into some of the most glorious wilderness areas on this planet, but if you are huffing and puffing and aching, it won't be much fun.
Nothing needs to be particularly strenuous.
If you get a chance, take a few hikes in the Sierra foothills or Yosemite as the snow melts back. I have starting bicycling with my son to the local park and doing the par course. There is also a sort of mental preparation that I suggest. Do a little reading about the Colorado Plateau in your spare time. I very highly recommend a book called Desert Solitaire by Edward Abbey.