The combination of a clean diet, exercise, and high quality supplements lead to long term health.
Special ceramic stones, balls and clay -- three different types of ceramics -- were combined to substitute for the effect of the mountains of minerals. A valuable sea coral is used that contains coral calcium, a unique calcium compound. These same materials form the pi component of Nikken PiMag technology.
The Hidden Leaf begin preparing for the Chunin Exams. Tsunade orders Kakashi to personally deliver an invitation to the Hidden Rain Village and, at the same time, gather intel. The Mist, Cloud and Stone send their regrets, but the Hidden Waterfall and Hidden Grass accept.