Good morning all,

I am fairly new to the program and am looking for alternatives to sprinting. I used to be an avid runner but suffered a knee injury awhile back. Now, the knee only bothers me if I run on it.

I work on the 9th floor of my building and have starting briskly walking up the stairs at least twice a day. (I can barely talk by the time I get to the top!)

Do you think this is a good substitute for sprinting?