The slippery slope is real, for sure. Neurogenic claudication and fibromyalgia are preventing me from walking more than 250 steps without significant muscle pain. 6 years ago I walked 2 miles for fitness several times a week. Long story short, I was sliding down that slope, but I bought a good quality recumbent bike and now I pedal for 40 minutes 5 days a week without pain. I am stronger, healthier and hopeful instead of depressed. It has not helped to walk distances, but I’ve gained so much good from it.