Catching a yawn is ‘linked to age’
- Friday, March 14, 2014, 21:43
- Health
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Contagious yawning is linked more closely to age than tiredness or empathy, US researchers find, and reduces as people get older.
Source: http://www.bbc.co.uk/news/health-26587535#sa-ns_mchannel=rss&ns_source=PublicRSS20-sa
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