Paragraf Tamamlama 129. Soru

129.

Speaking in public may be more than just terrifying. The stress may be deadly. A new US study has found that people whose hearts show ominous signs of poor circulation during such mental challenges face triple the usual risk of death in the years to come. Often people with bad hearts suffer chest pain during physical exertion. The reason for this is obvious. …………….. . Over the past decade, however, it has become clear that mental exertion can also overwork the heart, although often without pain.