On and Off

During discussion of why and what of sports one child spoke about being healthy. He started talking about heart and blood etc and another child was not listening so
immediatelyhe said I will take your heart switch it off and after Ifinishtalking I will switch it on. Thistriggeredan entire discussion on how the heart functions and the effects of having heart no heart etc. Few of them have decided to read more and sharetheirunderstandingof how blood goes into the heart