Imperian has hundreds of help files to help you learn more about the game and how to play.
4.4.3 Recovery of Health and Mana
There is one basic way to recover health and one to recover mana. Though there are many other methods, this file will not document them. You will find some of them in HELP HEALINGYOURSELF. SLEEPING: By typing SLEEP, you can put yourself to sleep. While asleep, you will be unable to perform most actions, but will slowly recover health. WAKE will wake you back up again. One major drawback to being asleep is that some abilities will do more damage to you. MEDITATING: By typing MEDITATE or MED, you can begin to meditate in order to recover your mana. While meditating, typing most commands will cause you to cease meditating. However, while meditating, a few abilities will do more damage to you than normal.