Good health is simply dying as slowly as possible.
My tip? Eat plenty of birthday cake. It is an irrefutable fact that, the more birthday cake you eat, the longer you live.
I'll tell you something that isn't a joke though - arthritis. The blight of my life and, along with fibromyalgia, the thing most likely to force me off my beloved DLSRs. I have already had to stop motorcycling and I'm employing all sorts of measures to keep shooting, but the arthritis advances remorselessly each year. I'm glad that compact cameras are becoming so competent; that will be my last resort I think.
5D3, 7D2, EF 16-35 f/2.8L, EF 24-70 f/2.8L II, EF 24-105 f/4L, EF 70-200 f/2.8L II, EF 100-400 f/4.5-5.6L II, EF 1.4x III, Sigma 150mm macro, Lumix LX100 plus a cupboard full of bags, tripods, flashes & stuff.