The spinal cord is the answer you are looking for.
I would have to say B. because yelling and screaming doesn't necessarily mean people will help you with the stress, it won't reduce the stress maybe for a short while, but that stress will still be there and it can still be as strong as before, it won't punish your heart or nervous system because physically stress is capable of that. screaming and yelling can make you feel better, but the stress will still be there. <span />
Answer: Yes, activities like aerobics help to have a healthy heart and that is why I like to do them.
Explanation: The exercises not only help the physical appearance but also health. A healthy heart is vital so that a person can live his daily life in a normal way and without any type of problems. In my case, I like to do aerobics or some type of cardio since these exercises help to maintain a young heart. Remember that these activities must be accompanied by a good diet.
