Spinning Heart

A Spinning Heart (also referred to simply as a heart) is a helpful object that is found in Super Mario 64 and its remake, Super Mario 64 DS. Spinning Hearts are translucent red hearts that slowly revolve on the ground. When Mario runs through one, the Spinning Heart will quickly replenish his Power Meter in proportion to the speed with which he runs through it. Thus, the faster he runs through it, the more health he recovers. Spinning Hearts are often found at the bottom of a cliff where the player may fall and lose health. In Super Mario 64 DS, Yoshi, Luigi, and Wario can also use a Spinning Heart to recover their own Power Meters.

Trivia

 * In Super Mario 64, the Spinning Heart is just a translucent sprite rendered in the 3D scene with collision data. In Super Mario 64 DS, it is an opaque 3D model.
 * In Mario Kart: Double Dash!!, when an item hits the player's Heart barrier, a sound similar to that of the Spinning Heart can be heard.