Fatigue is a feeling of tiredness, weariness or lack of energy and it may be chronic or acute. Generally, the sufferer will feel tired all of the time. It may be caused by lifestyle factors such as hard physical or mental labour, stress or other emotional causes, or it may be a symptom of an underlying condition. Treatments for fatigue include relaxation techniques, lifestyle changes such as quitting smoking or dietary adjustments, physical therapies, exercise, massage, herbal medicine, traditional Chinese medicine, Ayurveda and naturopathy.