Why NFL players can jump so high?

The NFL post-season is about to kick-off. Let's focus on their training.
Here are the results of the 2010 NFL combine in vertical jump:

Why recovery is important for vertical jump training

You can do the best weight training or vertical jump program, but without enough recovery, you won't be able to realize your potential results. For example, if you train hard and consistently, but you go out for parties every night, you probably won't notice any results. Probably, your performance will decrease.

The best vertical jump articles for beginners

I you are new to vertical jump training, you can get confused with the quantity of information on the subject.

The Vertical Summit

You have read every single article about vertical jumping and still have questions?
You can ask it on this forum:

Squat variations

Due to inflexibility, injury or other problems, not everybody is able to do the back squat with correct form. Or you can throw in other exercises just for more variations in your training. Switching to a new exercise can get out you from boredom, or it can help you break through a plateau.
Every exercise trains your muscles and nervous system in a - more or less - different way.