Read again and circle. 1 Your heart/lungs / head pumps blood around your body. 2 You can count your beat / heart / heartbeat. 3 You can feel your pulse in your wrist / knees / heart. 4 Count how many beats there are in one minute / one second / 30 seconds. 5 You need to multiply the number of beats by thirty / two / one. 6 When you exercise, your heart works slower / faster / the same.