I know a wide variety of folks in life. Those that out outdoorsy, play sports, jog, play soccer, hike, bike, whatever. I've been pretty sedentary for the past couple of years.

So I'm starting to feel like I don't have any stamina. It's time for come cardio. So at lunch-time yesterday, I decide to do some stairs in my office building.

Ok, I'm not 18 anymore, but come on. I was panting and just about collapsed after climbing only 4 or 5 flights of stairs. I finally...