Recreational drug use is when people use drugs just for fun. Drugs are different chemicals that can change how your body and brain work. Some drugs that people use for fun are marijuana, cocaine, and heroin. It can be dangerous because drugs can be addictive and hard to stop taking, and they can make you do things you might not normally do. Drugs can even cause health problems like heart attack or stroke. It's important to stay safe if you choose to use drugs. Talk to a doctor or your parents before you try any drugs and never take someone else's drugs without knowing what's in them.