24 When a patient visits a new pain clinic, what is he likely advised to do?
(A) To decrease endorphins.
(B) To reduce the amount of medicine he is taking.
(C) To protect the source of pain.
(D) To lie down to get enough sleep.

“Exercising may be the best antidote解毒劑 to chronic pain,” say doctors at a new clinic診所 for dealing with pain.

“People with chronic pain need to stop lying around, go out more and start exercising.” 

To most people, the intuitive直覺 reaction to acute pain is to stop moving and to try to protect the source起源 of pain.

But it seems that this is often counterproductive産生相反效果, especially in the case of就…來說 back pain, which after headaches and tiredness疲勞, has become the third most common reason for people to visit their doctors. 

Painful backs now account for millions of days off work. 

Lack of exercise slowly decreases減少 the flexibility and strength of muscles, so it is more difficult to take pressure off the site of pain. 

Exercise is essential. It releases endorphins, the body’s “feel-good” chemicals, which are natural painkillers. 

In fact, these are so important that researchers are now looking for drugs that can maintain維持 an optimum最佳 level of endorphins in the body. 

Most patients are prescribed開藥 drugs rather than exercise. However, since finding the cause of backache is not so easy, doctors frequently do not know the exact cause of the discomfort, and as the pain continues, patients end up taking stronger doses劑 or a series of different drugs.