Ki Metabolism (Su)
Source: Pathfinder Unchained, p. 17
A monk with this ability uses his ki to control his metabolism. As long as he has at least 1 point remaining in his ki pool, the monk needs to eat and drink only 1/4 as often as normal, needs only 2 hours of sleep each night (including to replenish his ki pool), and can hold his breath for up to 1 hour per point of Constitution. As a move action, he can spend 1 ki point to enter a state of suspended animation, falling unconscious and appearing dead to all senses. At the time he enters this state, he indicates a preset period of time or a triggering condition, after which he awakens.