The most common causes of muscle pain are tension, stress, overuse and minor injuries. This type of pain is usually localized, affecting just a few muscles or a small part of your body.

Why do all my muscles ache?

Often, people who experience muscle aches can easily pinpoint the cause. This is because most instances of myalgia result from too much stress, tension, or physical activity. Some common causes include: muscle tension in one or more areas of the body.

Why does my body ache and I feel tired all the time?

Chronic fatigue syndrome

Chronic fatigue syndrome (CFS) is a condition that causes you to feel exhausted and weak, no matter how much rest or sleep you get. It often causes insomnia. Because your body doesn't feel rested or replenished, CFS can also cause aches in the muscles and joints throughout your body.