Likely that his lifestyle took him in that direction; so unless he changes that, it will continue in the same vein.
Simple example: If you have a ‘bad’ posture, then certain parts of your body will take the strain, resulting in wear and tear on certain overused points. Whereas if you are more fluid in your movements, wear is distributed more evenly. Most people are set in their ways. Then once one part begins to fail, you overcompensate, which puts wear and stress on the body… Sitting in a wheelchair removes some of the stress and strain, but then your dependent on a wheelchair.
I see the terrible condition of so many here…