Which Two Factors Are Involved in "Runner's High

Multiple Choice

Which two factors are involved in "runner's high"?

A) endorphin release in the brain and a shift in consciousness similar to meditation states
B) endorphin release in the brain and a focus on the running activity itself
C) a shift in consciousness similar to meditation states and dopamine release in the brain
D) a focus on the running activity itself and dopamine release in the brain