Tolerance is a physical effect of repeated use of a drug. Tolerance does not always equal addiction. Withdrawal: Symptoms a person experiences when not using a substance, due to the body reacting to no longer having the substance.
<span>Endorphin's are pain killing chemicals that occur naturally in the body.</span>
The action of delaying or postponing.
The answer is B. Stimulants. Amphetamines is a central nervous system stimulants that affects the chemicals in the brain and nerves that contributes hyper activity or Increase of energy in the body and the impulse control in the body
