What causes cardiac muscle fatigue?

Usually a virus (e.g. Myocarditis). Our heart muscle is pretty well-designed to avoid fatigue. It's a combination of smooth and striated muscle that doesn't get exhausted very easily, so only extenuating circumstances will cause it to fatigue. read more

There are 82 conditions associated with fatigue and muscle weakness. The links below will provide you with more detailed information on these medical conditions from the WebMD Symptom Checker and help provide a better understanding of causes and treatment of these related conditions. read more

You will explore a number of significant adjustments required by your body in order to properly respond to the physical stress of exercise, including changes in carbohydrate, fat and protein metabolism, nutritional considerations, causes of muscle soreness & fatigue, and the effectiveness and dangers of performance enhancing drugs. read more