Stamina Wheel

The Stamina Gauge is a feature introduced in Skyward Sword.

Overview
The Stamina is displayed as a pie-shaped indicator that appears near Link whenever he is performing an action that requires great effort, such as climbing, sprinting, rolling, pushing, pulling, or carrying heavy objects, and performing a Spin Attack. Performing said actions depletes the Stamina Gauge, although some actions drain the meter faster than others: while dashing diminishes the stamina constantly, the Spin Attack decreases it in large portions.

When Link's stamina is depleted, Link will become tired and his movement will be slowed down dramatically for a few seconds until it replenishes. During this time, Link will also be unable to use items, including his sword and shield, leaving him defenseless against enemies. The Stamina Meter replenishes over time once Link stops performing strenuous actions, and it replenishes faster by standing still than by walking.

If Link buys a Stamina Potion in the Bazaar, he may half the rate that his Stamina Guage depletes for three minutes, or, if it is upgraded, the Stamina Gauge will not decrease at all for three minutes.