Tom Holland really wished to become Spider-man, and as a result, he became a workout fiend for several months just to get himself in the right physical form to play the part. His secret, however, is that Holland already has a gymnastics ability that serves as his secret weapon in securing the Spider-man role.
Talking with Associated Press via YouTube, Holland said Spider-Man was a comic book role he has always admired to play, so when he realized that Marvel had an interest in him for the character, he knew that he had an opportunity to do something extra to get their attention. He added that in recording several scenes for Marvel to review he required a short clip of him identifying himself before the scene, and therefore, he added a little something special to his ID, hoping that it would be noticed.
Although it was unclear how much of an impact the acrobatics had on Marvel's decision, it is presumable that at least they did not hurt. Holland has initially pointed out that he is not really doing his personal stunts in the part, but at the same time, there is definitely non-stunt exercise required in the role and Holland proved, as he further proves, that he has the capability to pull it all off.
According to Cinema Blend, Holland has his personal air-filled track that enables him to practice his flips and he spends 20 minutes weekly giving himself electric shocks as well.
Holland beat a number of young actors for the Spider-Man role, including "Ender's Game's" Asa Butterfield, Liam James, and Nat Wolff. The character has been a relatively indistinct person until now in most cases doing smaller films. Holland will be co-starring with Chris Hemsworth in the upcoming "In the Heart of the Sea" before getting his first taste as Spider-Man in next summer's "Captain America: Civil War."
Here is Tom Holland's interview.