Arjuna gained a wolverine healing factor for a week.

Cellular Optimization: You decided on adding the extreme cellular regeneration to yourself; for about a whole week you had levels of regeneration that were on-par with that one badger guy in the american comic books, and then it slowed down a lot to the point that a single cut would take something like a full day to heal completely. It's still miraculously fast by human standards, but nowhere near the potential it previously had. On the other hand, at least you're only eating half your body weight in food rather than three times it.