title: Of backpacking, grandchildren, reproduction, and longevity.
authors: Patrick J
authors: PJ
authors: Murphy
mesh_terms: D000203:Activities of Daily Living; D000368:Aged; D006801:Humans; D008136:Longevity / Q000502:physiology*; D009043:Motor Activity / Q000502:physiology*; D012098:Reproduction / Q000502:physiology*