I have 4 herniated disk, arthritis in my spine, asbestos in my lungs with restrictive lung disease, five stints and coronary artery disease, almost deaf, colorblind, heel spurs on both feet, bad hips and knees, and arthritis in my hands and fingers. Yet I still ride four-wheelers, snow-machines, motorcycles, and walk two or three miles a day. Yea it hurts, but the day I quite is the day I will lye down and die. I'll probably get killed and eaten by a Grizzly or wolves first anyway.