Heart Fruit

The Heart Fruit
As the Yoshis in Yoshi's Story look for the Super Happy Tree, they follow a trail of fruits. One of those fruits is the Heart Fruit. If you know what a Star does, well you kinda know what the Heart Fruit does. The fruit makes the Yoshi invincible and stronger. There is also another power to the fruit, it will also give the Yoshi some health. It looks like a red heart with a face on it. Some are big, some are small.

Its Purpose
Its purpose in the game is that it is the fuel for the Super Happy Tree. Without it, the tree wouldn't be a happy tree and the Yoshis on the island whouldn't be happy.