title: On call. I am a 67-year-old man and, except for high blood pressure, my health is excellent. Since I retired earlier this year, I've started to enjoy an afternoon nap, but I don't know if napping is good for me. What's your view?
mesh_terms: D000368:Aged; D006801:Humans; D008297:Male; D012890:Sleep / Q000502:physiology*