That’s interesting you say that because a health problem is what got me into art in the first place. I was recovering from an injury that kept me in bed for most of the day and to relieve myself from the boredom I started drawing. This went on for months and I would just lay on my back and draw and draw. Anyway, keep at it man and I hope your health holds up so you can continue to be creative. Or maybe if you keep being creative your health will hold up? Maybe that’s how it works.