Why do cardiac muscles never get fatigued?

Explanation

**Step-by-Step Solution:**

1. **Definition of Cardiac Muscles**: Cardiac muscles are specialized muscles found in the heart. They are responsible for pumping blood throughout the body.

2. **Understanding Fatigue**: Fatigue refers to a state of tiredness or restlessness that occurs when muscles are overworked or lack sufficient oxygen.

3. **Comparison with Skeletal Muscles**: Unlike cardiac muscles, skeletal muscles can become fatigued, especially during intense physical activities like running or exercising. This is because they may not receive enough oxygen, leading to anaerobic respiration.

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