Rain underwent six months of intensive martial arts and weapons training, achieving a remarkably lean "shredded" physique without the use of weights.
If you're interested in watching Ninja Assassin, you can try searching for it on streaming platforms or purchasing a copy on DVD or Blu-ray. Please be aware that some platforms may not have the rights to distribute the movie, so be sure to check the availability and legitimacy of the streaming site. ninja assassin 2009 720pmkv filmyflycom link