Slalom jumps are a lower - body exercise designed to improve your jumping ability as well as quickness and dexterity with your foot movement. You will need ample space for this exercise and some sort of line as a marker on the floor. You can draw one create one with a jump rope or use the crack between two exercise mats.stand on one side of the line and while keeping your feet together jump sideways over the line to the other side. Immediately jump back across again and continue jumping back and forth over the line several times quickly. Perform several repetitions without stopping. You will find that the exercise in not as easy as it seems,so you will probably only be able to do four or five jumps at a time. Be sure to focus on exploding with your leg muscles on each jump.