After using Zen Armor for a while, shaolins noticed they are running out of mana quite often, and it takes too long to recover from mana outage. With some training shaolin can enter special meditation trance in which he focuses all his recovering abilities upon his mana reserves, negating vitality and hitpoint regen and redirecting them to mana. With this skill shaolins are able to quickly ready themselves for new battle if they were not beaten too much. Note that recovering from such a deep trance as this takes some time even when you are under attack so it can be deadly to start meditating in unsafe location.

See also: zen trance, lotus blossom