Coca is a type of plant that grows in South America. People have been using it for a long time because it contains a special chemical called cocaine. Cocaine is a type of drug that can make people feel happy and full of energy, but it can also be very dangerous and addictive.
The leaves of the coca plant can be chewed or brewed into a tea to help people feel less tired and more alert. Some people also use coca leaves as medicine to help with things like altitude sickness or pain.
However, it's important to remember that even though coca can be used in some helpful ways, using cocaine made from coca can be very harmful to our bodies and our brains. It's always best to stay away from drugs and talk to a grown-up if you have any questions or concerns about coca or any other substance.