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Heart Boost will add an extra Heart Piece for one level. This item is unique to Donkey Kong Country Returns. They can only be used by one player at a time and this item can be purchased in Cranky's Shop for ten Banana Coins. The item is similar to the Banana Juice, but half the cost, no golden color, and only one extra heart. Also unlike the Banana Juice, the extra heart can be regenerated with health drops.
- When purchased from cranky's shop he says the following phrases:
- "aaawww you're all heart."