When was the cottage built
The cottage was built ().
Ancient Greek philosopher Aristotle viewed laughter as “a bodily exercise precious to health.” But (1) some claims to the contrary, laughing probably has little influence on physical fitness Laughter does (2) short-term changes in the function of the heart and its blood vessels, (3) heart rate and oxygen consumption But because hard laughter is difficult to (4) , a good laugh is unlikely to have (5) benefits the way, say, walking or jogging does.
(6) ,instead of straining muscles to build them, as exercise does, laughter apparently accomplishes the (7) , studies dating back to the 1930’s indicate that laughter (8) muscles, decreasing muscle tone for up to 45 minutes after the laugh dies down.
Such bodily reaction might conceivably help (9) the effects of psychological stress. Anyway, the act of laughing probably does produce other types of (10) feedback, that
A. hardens
B. weakens
C. tightens
D. relaxes
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