Thanks for your kind words on my "Testing Limits" blog -- and you're totally right: there are options, for both of them, should the bottom fall out with either of these tests. I do tend to get tunnel vision, at times, when I see a path that seems right.
In the meantime, I'm just going to keep thinking good thoughts and hope for the best! Thanks again for your support!
Hope you do try the fit bit challenge thing I am trying. It is working well for me so far. I think it will make the final purchase so much more rewarding. Good luck with your fitness journey! 1346 days ago