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blisters, chafing, calluses 3 common skin issues in study of 76 runners...only 62% wear sunscreen http://t.co/HA3Ghzx7iQ #nyrrvirtualtrainer
blisters, chafing, calluses 3 common skin issues in study of 76 runners...only 62% wear sunscreen http://t.co/HA3Ghzx7iQ #nyrrvirtualtrainer