If you enjoy and participate in playing any sports that involve jumping such as basketball, volleyball, or even football (for some positions), you'll know the importance of having a high vertical jump.
However, from my experiences, increasing your vertical jump can be one of the toughest things to accomplish and maintain since it involves so many things: Balance, flexibility, strength and quickness are just some of the many things that must all be improved to increase your vertical.
Many websites promise quick results by doing singular exercises (such as squats) to improve each part of the components needed for jumping individually.
I'm telling you that the best exercise for jumping is the most obvious one: jumping Instead of working on your quickness, then flexibility, then strength, then balance, (creating instability and confusion in muscles), focus on the main thing you want to improve which is jumping.
The best exercise would be to get a jump rope, and jump.
This increases all the necessary components to having a high jump together allowing for more cohesiveness and stability.
Focus on jumping for 20 minutes a day with a jump rope and don't hold back.
Jump as high as you can every time, maybe try doing some double jumps with the jump rope or even triple jumps.
If at the end of each exercise, you aren't tired and your legs aren't sore, that means you didn't put enough effort into it.
Make sure your legs are sore and tired after the exercise and get a god nights rest.
This will give your legs time to develop and heal to get ready for the next exercise.
Don't listen to all the scams out there promising you results in days.
Increasing a vertical jump is a daunting task that requires patience and determination.
Simply jumping everyday is the most effective way to increase your vertical and you will see results soon respective to the amount of work you put in.