Wheres that from?"Any character brought to 0 (or fewer) hit points and then revived will
remain in a coma far 1-6 turns. Thereafter, he or she must rest for a full
week, minimum. He or she will be incapable of any activity other than that
necessary to move slowly to a place of rest and eat and sleep when there.
The character cannot attack, defend, cast spells, use magic devices, carry
burdens, run, study, research, or do anything else."