It's absolutely crazy what athletes go through in the NFL Scouting Combine. A few days of testing that will most likely determine if they are drafted or have a future in the NFL.
There are training facilities across the country that help those NFL hopefuls prepare for Combine's physically challenging events including the vertical jump, 40-yard dash, 3-cone drill and bench press among others.
In addition to the drill work, these facilities do a number of tests including putting athletes in a "bod pod," to test the body's fat count, as well as doing electromagnetic testing of the nerves and joints. There are nutritionists, orthopedic surgeons and even interview coaches.