Myth 1:  A workout plan is all you will ever need
Most common of all myths, you will be forgiven if you had the same thoughts before this.  For you to achieve greater heights in your jumps, you not only need a workout or training plan,  you need a personalized system which will track your progress during training as well as non-training sessions.  It is not the amount of time that you spent in training that helps you improve your vertical jump.  It also involved the time spent outside of training, when your muscle masses are building and your muscles respond to reflexes from your training previously.

Myth 2:  You need 'good genes' to jump higher
Vertical jump is about your jumping ability and has nothing to do with genes.  Once in a while, you might find a person with better genes who excel at his vertical jump but this can only be true if he has incorporated a fair amount of training time to achieve that result.  

Myth 3: If you lift weights, you will increase your verticle jump
Anyone who carries this mentality will fail to achieve greater heights in their jumps.  Building muscles by lifting weights only increases your muscle masses, not the height to your jump.  You have to strengthen the right kind of muscles to get that dynamic lift.  And the right kind of muscles can only be trained using plyometric training.

Myth 4: Anyone can do that 5 sets of 10 workouts
Proper jump trainings are personalized to cater to your needs and monitor your progress.  Anyone telling you that you can only get the results from a fixed workout system is wrong and this will not help you achieve the jump height you want.  Our body, strength and stamina differ from each other.  Therefore the 12 workouts can only work for some people while others will see no improvement with the height of their jump.  

Myth 5: You will jump higher after taking these supplements
This is pure advertising myth created by the supplement product company.  There is no way any supplement can increase your vertical jump without going through the jump training.  Your muscles do not rely on supplements to give you an extra boost in your jump.  What they need are consistent trainings.

Now that you know that these myths are just that -  myths, you should be confident to undergo the proper training, to improve your vertical jump manual.