In fact, fatigue has several causes. Fatigue is physical or mental weariness that can be caused by mental stress, physical disease, lack of sleep, or worry. If you are feeling fatigued, try to sort out what may be causing it. When you see your healthcare provider ask about feelings of fatigue. He or she will ask many questions to help diagnose the cause.
Enough sleep can help prevent fatigue.
Enough sleep is crucial in preventing fatigue. Sleep needs are largely individual. Most people require anywhere between 7 and 9 hours of uninterrupted sleep every day to not feel fatigued. If you do shift work, if your sleep pattern is regularly interrupted, you may need more sleep. As we age we need less.