"drugs are chemicals that effect your mind or body"
stimulants (eg caffiene) increase brain activity which will lead to feeling more alert
depressants (eg alcohol) decrease brain activity which makes you feel tired and slows down reactions.
painkillers or aneasthetic (eg paracetemol) reduce pain by blocking nerve impulses.
performance enhancing drugs (eg anabolic steroids) increase muscle developments, which is why they can be abused by sports people.
hallucinogens (eg LSD) distort what is seen and heard.
stimulants & depressants act on the synapses of the nervous system. stimulants cause more neuro transmitter to cross the synapse (therefore speeding up nerve impulese) whereas deppressants bind with receptor molecules in…