After long research, I still couldn't find any credible explanation. A lot of the information was speculative.
I wasn't surprised at all. After all, few people had actually seen werewolves.
Interestingly enough, there was a website dedicated to werewolves. Many people posted stories about their adventures with werewolves. The website was very secretive, and I only found it after another internet friend introduced it to me.
However, not all of the content on the website was useful. After browsing through a lot of posts, I found an article that analyzed werewolf abilities.
There was a detailed description of the werewolf's strength, speed, and control over incantation. It mentioned that there was a type of incantation that could allow a person's wounds to heal quickly. It would take around one to three hours for the wounds to fully heal.