If something during an intermission sequences causes Snake's Psyche gauge to decrease, rapidly tap X to replenish it.

During Act 2 after Snake loses his Psyche when Namoi tells how long he has, press L1. Snake will look at Naomi's chest and his Psyche will recharge.

To regain life or Psyche, hold X go into the prone position with no weapon equipped. Snake's life and Psyche gauges will begin to recover. This is useful when trying for a no rations/recovery items completion.