Studies have indicated that acupuncture works because of:
a. the increase in serotonin
b. placebo effect and the production of endorphins
c. needles decreasing the stimulation of large nerve fibers
d. the decrease in endorphins in the brain
Question 2
Stress-induced analgesia can be described by this example:
a. runner's high
b. stress fracture in foot from running
c. stress experienced by air traffic controllers
d. fibromyalgia