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مشاهدة النسخة كاملة : Poor sleep due to 'first-night effect'



BECKHAM
22-04-2016, 06:45 AM
People sleep less well in an unfamiliar place as the brain's left side stays alert for danger, a study suggests.

for more .... (http://www.bbc.co.uk/news/health-36105516#sa-ns_mchannel=rss&ns_source=PublicRSS20-sa)