ychuck46
Recycles dryer sheets
Not much you can do about altitude except get acclimated. I lived in Boulder for most of the 1970s. I was a runner and good athlete overall when I moved there, but came from a much lower elevation. My first run up Boulder Canyon I thought there was something wrong with me. But within a short period of time I was doing the 14K peaks like they were nothing. Of course, I was in my 20s then so it might take a little longer now