A friend here has two sets of Aunts and Uncles that come from back east to visit. They are the same ages give or take a year and one couple comes and takes cabs everywhere and just lays around the pool. The other pair walk everywhere and play tennis etc. The first set has become flabby and sickly over time while the other two active ones are in great shape and quite healthy. Theres a saying I believe:

USE IT OR LOSE IT!!!
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