Today at gym/PT I was hooked up to the Lite Gaite. I was at a speed of 2.5 and I went for 3 quarters of a mile. Getting a little higher each time. This time I had a sharp pain in my low back but I just tried to ignore it and it eventually worked itself out. I didn't get the shooting pain in leg this time. I went for almost 20 minutes. Next time we will try for a mile. By May, I'll for sure be ready for Marathon if I keep up the way I am. I feel its improving my overall walking. I did squats too. Got stretched. Now I'm raring to go!