The dot drill is a great exercise in that it is simple to set up, requires little preparation and has tremendeous effects for your body! This is the best drill there is for improving your quickness in jumping.
This exercise is more focused on the overall performance rather than jumping high in particular. However, it does have a big impact on that too! You simply can't go wrong by doing this exercise on a daily basis.
You begin by marking up a two by three foot square with four dots in the corners. Then you place a fifth dot in the middle of the square. The best thing is to have the dots sprayed or painted directly on the floor. This way you don’t have to redo the marks every time. If you are not the owner of the place where you want to do the drill, just ask them if they are willing to help you out with marking out the dots. Otherwise use tejp.
Now to the exercise.
If you are new to this exercise you will feel completely exhausted in the beginning. A good first time around is usually 60-70 seconds for the entire exercise. It takes a while to learn all the patterns by heart. As you become better at this, you should be pushing 40 seconds. The best female times recorded in the world are around 38 seconds!
Good luck!
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