My grandfather on my mother's side died of trauma after a car knocked him off his bike at age 91, and he'd had a heart attack at 80. I don't know about working, I guess if you can afford it. But this I know, keep riding...
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Genesis 49:16-17
"Well, well!" said Holmes, impatiently. "A good cyclist does not need a high road. The moor is intersected with paths and the moon is at the full."