This picture shows exactly how Injecting Of Drugs will affect the human body. You should take a moment and see if you can decide on your own which arm the drugs were injected into. Human beings only have two arms so you have a fifty percent chance of being right.
The man injected the drugs into his left arm. The clues that lead to that conclusion are the upwards lifting of the left side of this head,
which causes the head to tilt to the right,
the lower left shoulder,
and the smaller left eye.