Answer:
doing exercises
Explanation:
these like running use much calories than normal
The benefit of the circuit of fetal blood course through the ductus arteriosus is the ductus arteriosus will permit more blood to go to the placenta and sidestep the lungs (since there is no blood required there yet). I hope the answer will help you.
B) exercise-associated muscle cramps
Learning by doing exercises or playing games; commonly used in schools.
Males get very aroused around their partner they find sexually attractive and the male sex hormone known as testoterone is going crazy. If you want a more specific answer I'd reccomend researching the male anatomy.
