Magazine ad: Men and women who run competitively learn that at least two of their human capabilities—physical stamina and breath control—can be stretched to higher and higher levels. The vigorous conditioning runners undergo is critical to their performance. Proper conditioning can also stretch another human capability—our minds. If you rigorously condition your mind, it can also attain higher and higher levels. Stretch and stimulate your mind! Join your local Puzzlemaster Club.
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This magazine
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