BMX mostly began in the 1970's where many kids would ride their BMX bikes off jumps. In the 1990's BMX started becoming more popular. It made it's way into the X-Games and the Olympics. BMX has now advanced to 20 pound bikes and many different tricks. BMX riders now either do freestyle riding or racing. As BMX became more popular, the more advanced it got. There are three different styles of BMX freestyle: which are flatland, street, and dirt. People have invented many different tricks for each style.