Instructions
Play until you reach the first guardian dungeon in "Chapter 2: The Guardian of Flame." Travel to the 19th floor of the dungeon and pick up the item named "Apple of Fire" to raise Chocobo's SP by one point.
Continue playing until you reach the second guardian dungeon in "Chapter 3: The Guardian of Water." Battle up to the 29th floor and pick up the item named "Apple of Water" to raise Chocobo's SP with another point.
Keep playing until your each the third guardian dungeon in "Chapter 4: The Guardian of Light." Make your way up to the 39th floor and pick up the item named "Apple of Light" for another one-point increase to Chocobo's SP.
Play until the fourth and final guardian dungeon in "Chapter 5: The Guardian of the Dark." Travel up to the 49th floor to receive the fourth and final apple, the "Apple of Dark." This gives Chocobo the final one-point increase to its health.