Life and ChakraThe life and the chakra are two very important elements for your ninja: if you don’t have any life points left, you’ll die. And if you have no more chakra points available, you can’t use jutsus anymore.
These two capacities can be increased with the points you gain at each level, meaning how many you put into it.
You can also recover the life or chakra lost during a battle, with the bonuses spread onto the map. The bonus " bowl of ramen " gives some life, and the bonus "Ying Yang" gives some chakra.
Besides, the chakra regenerates itself at a rate of 5 points per second.