People often take drugs because they like the effects they have on you. But these effects can be dangerous.
Without drugs you are in charge of your body and mind. But drugs can alter the way the body or mind works and people can feel less in control of themselves. This can be both frightening and dangerous.
People sometimes take silly risks when they've taken drugs. they may think that they can do things that are unsafe or even impossible.
For example, people have died thinking that they could fly, or swim across a large river.