47 days

So the last few days have also had a lot of travel, so my exercising has been aerobic. I've done treadmill, and hiking out of doors here in New Mexico, where I am spending a few days with my friends, Mark and Susan, before I head to Colorado Springs to see my kids (yay!).

The hiking here is very steep, and the altitude very high. We start at 9,000 ft and go up from there!

Simply walking at a decent pace nets a heart rate of 140+. Compare this with using the bike trainer, doing 80 RPM and getting 122-130. Tough stuff, altitude.